Code p1421 nissan versa - 1615 posts · Joined 2011. #6 · Dec 15, 2011. And I live in maine btw, and we haven't had a morning above 40 degrees in several weeks. My ses light has never come on (except the time my brother forgot to close the fuel cap. 2008 Versa S: -Throttle Controller. -DC Exhaust+Intake.

 
I bought a 2008 Nissan Versa LS last month. It has 235,500 kilometres on it but the engine and transmission run quite well. ... A P1421 is a cold start issue ... O2 sensors have their own diagnostic trouble codes. Whenever you see an O2 sensor code, that's the time to change the sensor. For example, I had a P0138 code a few years ago, and had .... Crossword clue aromatic plant

The service memo linked in West Rock's post shows that the fuel pressure regulator is an issue from 2007-2009. So that means one of two things, either the fuel pump changed from 2009 to 2010, or Nissan has elected to not recognize the fuel pressure regulator as an issue in the 2010 and instead recommends changing the entire fuel pump. Code P1421 on 2009 Nissan Versa- Could it be something more serious? Background: A little over a month ago, my car (2009 Nissan Versa with like 125k miles) wouldn't start. It was definitely trying, but couldn't quite get there. 2009 Nissan versa 120k miles with engine light on --code P1421 came up for ecm. was told to disconnect battery for 30 minutes and would reset --didn't work. then went on internet and ran thru procedur … read moreDTC Nissan P1421 Short Explanation - YouTube. Maxidot Nissan. 1.42K subscribers. Subscribed. 23. 6.2K views 3 years ago #diagnostictroublecode #nissan …The P1421 is "COLD START CONTROL". The ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. There are a few preliminary checks you can do here.The P0706 fault code refers to a problem with the transmission range sensor circuit. This sensor is part of the ParkNeutral Position (PNP) switch, which detects the position of the selector lever when it is in the N or P shift position. It then sends a signal to the Transmission Control Module (TCM).I have a 2010 Nissan Versa S 1.8. The service engine soon light came up, went to Advanced Auto to have the code checked. Found P1421 code, Cold Start Control, Short to Ground.NOTE: If DTC P1421 is displayed with other DTC, first perform the trouble diagnosis for other DTC. ECM does not control ignition timing and engine idle speed properly when engine is started with pre-warming up condition. What Are The Potential Causes Of The Nissan P1421 Code? Lack of intake air volume; Fuel injection system; ECM; Recommended PartsI have the engine code P1421 on my 2009 Nissan Versa 1.8L. asked ...Post by Faja » Fri Nov 13, 2009 3:25 pm. This is taken from a different website on a Nissan Quest: Code P1421 means cold start control problems. Possible cause .. 1 Lack intake air volume2 fuel injector3 ECM. Car is under warranty, call the dealer and let them figure it out. Top. 2009SentraSE-R. Posts: 36. To fix the automobile fault code P1422, follow these steps: 1. Check the possible causes mentioned above. 2. Visually inspect the wiring harness and connectors related to the fault code. 3. Look for any damaged components. 4. Check for broken, bent, pushed out, or corroded pins in the connectors. What is the Cost to Diagnose the Code P1421 2008 Nissan Sentra? Labor: 1.0. The cost to diagnose the P1421 2008 Nissan Sentra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. The most common cause of a P1421 trouble code is a damaged or faulty catalytic converter. Older cars are more likely to have worn-out catalysts because of wear and tear. Factors like clogging ...Code in my 2010 Nissan Versa 1.8 says P1421 says my ECM needs reprogrammed. 131,120. I don’t know if it is an S or SL - Answered by a verified Mercedes MechanicI bought a 2008 Nissan Versa LS last month. It has 235,500 kilometres on it but the engine and transmission run quite well. ... A P1421 is a cold start issue ... O2 sensors have their own diagnostic trouble codes. Whenever you see an O2 sensor code, that's the time to change the sensor. For example, I had a P0138 code a few years ago, and had ...P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Nissan Versa has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to controlHere are the relevant service bulletins from Infiniti:FX50. 2009-2010. Infiniti TSB ITB08048FX35. 2009-2011. Infiniti TSB ITB11007I have a 2010 Nissan Versa with the code P1421, is there a bulletin service for this car? asked Dec 17, 2017 by frank. p1421; nissan; versa; 0 like 0 dislike. 1 answer 234 views. does P0507 on VW signify. asked Oct 21, 2018 by anonymous. code-p0507; volkswagen; wagon; 0 like 0 dislike. 1 answer 863 views. P0507 KIA - asked May 13, 2018 by ...Nov 25, 2012 · I went to an auto zone for the free diagnostic, and it was throwing the code P1421. It turns out there is a service bulletin for this, with the possible causes listed as follows: Lack of intake air volume (block air filter) Getting yourself out of a lease with Nissan can be tricky unless your willing to pay the lease in full or pay for the whole vehicle. However there are options available for you to ...DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition. Possible cause. P2119: ETC ACTR-B1 (Throttle actuator control throttle body range/ performance)The P1421 code indicates a problem with the EVAP purge control valve, which is responsible for controlling the flow of fuel vapor from the charcoal canister to the … Nissan. Code: P1421. Definition: Cold Start Emission Reduction Strategy Monitoriing (Includes Hybrid Models) Description: HYBRID MODELS CAUTION: Hybrid systems use very high-voltage battery systems. Before starting any service work involving the battery system, turn the ignition switch OFF and then remove the service plug from pocket in the trunk. Nissan TSB NTB10-089 Make: Nissan Number: NTB10-089 Title: MIL 'On' with DTC P1421 Stored Date: 7/29/2010 Models: 2009-2010 cube Summary: The customer reports the Service Engine Soon Light (MIL) ON, and DTC P1421 (Cold Start Control) is stored in the ECM. If this bulletin applies, reprogram the ECM.Nissan TSB NTB09-116 Make: Nissan Number: NTB09-116 Title: 2007 - 2009 Versa; DTC P1421 Stored Date: 10/23/2009 Models: 2007-2009 VersaCode P1421 on 2009 Nissan Versa- Could it be something more serious? Background: A little over a month ago, my car (2009 Nissan Versa with like 125k miles) wouldn't start. It was definitely trying, but couldn't quite get there.If you find a P1421 code stored in the computer, perform this procedure to teach the ECM the fully closed position of the throttle plate It must be performed any time you disconnect the connector from the throttle body. Make sure that the accelerator pedal is fully released. Turn the ignition switch ON.Code P1421 on 2009 Nissan Versa- Could it be something more serious? Background: A little over a month ago, my car (2009 Nissan Versa with like 125k miles) wouldn't start. It was definitely trying, but couldn't quite get there.Next type Code p1421 for Nissan versa into search box. You can type code pxxxx into search box and get answer. Anyone can buy a $19.00 dollar scanner and even comes with code list.The P1421 is "COLD START CONTROL". The ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. There are a few preliminary checks you can do here.I have a 2010 Nissan Versa with the code P1421, is there a bulletin service for this car? asked Dec 17, 2017 by frank. p1421; nissan; versa +1 vote. 2 answers 325 views.What it means code po868 on a versa nissan? Car does not asselerate whas pedal is pressed. Posted by Anonymous on Nov 25, 2013. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. Comment; Flag; More. Print this page;P1421 OBDII is a fault code stored by the engine control module when it can’t properly control ignition timing and idle speed when the engine is started up under warm-up …What Does The Nissan P1421 Code Mean? HYBRID MODELS CAUTION: Hybrid systems use very high-voltage battery systems. Before starting any service work involving the battery system, turn the ignition switch OFF and then remove the service plug from pocket in the trunk. After removing the service plug, wait 10 minutes before touching any of the high ...On Nissan and Infiniti vehicles, the diagnostic code P1421 OBDII is stored when the Engine Control Module cannot properly control the ignition timing and idle speed when the engine is started under warm-up conditions. Symptoms of …how to fix code p1421 nissan versa 2008. asked Jan 8, 2017 by anonymous. p1421; 0 votes. 1 answer 473 views.P2138 is a generic powertrain code that can affect your Nissan Versa’s “drive by wire” throttle system. It means that your Versa’s “D” and “E” throttle position sensors do not agree with one another on how much far the throttle has been opened. They should have a …Later on in the evening I came home and started the car up, and Blam. CEL. Ran the codes- the same old fucking too lean bank 1. And the p0507 code. I was able to do the whole idle relearn procedure, and by doing so that cleared the p0507 code. So I started it back up and after a few moments of idle around 700-800rpms the damn p0171 came …Dec 24, 2018 · The service memo linked in West Rock's post shows that the fuel pressure regulator is an issue from 2007-2009. So that means one of two things, either the fuel pump changed from 2009 to 2010, or Nissan has elected to not recognize the fuel pressure regulator as an issue in the 2010 and instead recommends changing the entire fuel pump. 2009-nissan-versa-p1421-p1421; 1 Answer. 0 votes . answered Nov 28, 2017 by OBDIITech (7.0k points) It's a common problem with the Versa and the factory issue a service bulletin for that problem. ... why does code p1421 show up after 100,000 miles-says to reprogram ecu..nissan-versa 2008.350Z Instruments and Electronics - The Nissan 350Z instruments and electronics were designed to be easy for the driver to use. Check out the 350Z instruments and electronics. Adver...Jun 14, 2020 · To diagnose the P2119 Nissan code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. P0301 is a fairly common trouble code with the Nissan Versa. It's an OBD2 code and indicates that your car’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Versa. Fixing P0301 should be considered a high priority. Unlike a lot ofI have this code P1421 for my 08 Versa but there is no evident impact to the performance or even to the mpg's of the car. Should I really worry about the code? ... 2008 Nissan versa 1.8 recommended-fix; code-p1421; 1 Answer. 0 votes . answered Mar 30, 2018 by Reynaldo (12.6k points) P1421 Cold start control. This is for cold start here is how ...Next type Code p1421 for Nissan versa into search box. You can type code pxxxx into search box and get answer. Anyone can buy a $19.00 dollar scanner and even comes with code list.P1421 nissan versa 2009 parts list manual The control engine tell-tale appears and the Nissan P1421 fault code is stored. Perform the regeneration in the following order:Butterfly valve Closed position Restart procedure Inactive air volume Restart procedureNissan butterfly valve Closed position Restart procedurePerform this procedure to teach the …Next type Code p1421 for Nissan versa into search box. You can type code pxxxx into search box and get answer. Anyone can buy a $19.00 dollar scanner and even comes with code list.To diagnose the P1421 2006 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.I have the engine code P1421 on my 2008 Nissan Versa, check engine soon lite don't get off. Vehicle: 2008 Nissan Versa nissan; versa; p1421; 1 Answer. 0 votes . answered Jan 5, 2017 by OBDIITech (7.1k points) If you have no drivability problem, you may have to reprogram the ECM. ...Dec 15, 2021 · 2009 Nissan versa 120k miles with engine light on --code P1421 came up for ecm. was told to disconnect battery for 30 minutes and would reset --didn't work. then went on internet and ran thru procedur … read more 2010 Nissan Versa 1.8L with engine code P1421. asked Apr 23, 2017 by anonymous. nissan; versa; p1421; 0 votes. 1 answer 477 views.Next type Code p1421 for Nissan versa into search box. You can type code pxxxx into search box and get answer. Anyone can buy a $19.00 dollar scanner and even comes with code list.This Nissan versa question is worth at least $25 for a Nissan dealer employed tech with at least 7 yrs exp, In my shop - Answered by a verified Nissan Mechanic ... Hi I'm fixing a Nissan Versa 2009 with trouble codes p2138, p0731 and p0732. The trouble codes went away last time (many months ago) and have returned.There is no service bulletin for the 2010 model. you can try to clean the mass airflow sensor with mass airflow sensor cleaner and clean the throttle body with throttle body cleaner and after you will have to do idle air relearn see steps below (you can disconnect the battery while cleaning the parts to reset the computer 15-30min) 2007-2011 ... =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code NISSAN P0302 Saving Rep... P0101 code in the Nissan Versa is crucial to maintaining your truck's performance and ensuring it runs efficiently. This code indicates that there is a problem with your car's Mass Air Flow (MAF) sensor, specifically, a Range/Performance issue. The most common cause of P0101 is a bad MAF sensor. When you encounter the P0101 code,Understanding the P1421 Error Code. When the P1421 error code appears in your Nissan’s diagnostic system, it indicates a problem with the engine management system.I have a 2008 Nissan Versa 5 door, the Service Engine soon light has come on. I took it to Autozone to check the computer code, this is code. No one at Autozone knew what this meant Troubleshooting: P … read moreThere is no service bulletin for the 2010 model. you can try to clean the mass airflow sensor with mass airflow sensor cleaner and clean the throttle body with throttle body cleaner and after you will have to do idle air relearn see steps below (you can disconnect the battery while cleaning the parts to reset the computer 15-30min) 2007-2011 ...Feb 17, 2020 · The P1421 is "COLD START CONTROL". The ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. There are a few preliminary checks you can do here. Google Reader enthusiasts have likely already noticed that Reader has now integrated with Google Talk to make your shared items available to your Google Talk friends inside Reader ...Clean the MAF sensor with CRC MAF Cleaner spray. I wouldn't even use electronic cleaner spray as the MAF sensor are extremely sensitive. Additionally, make sure you left the sensor dry out for at least 15 minutes before reinstalling it and giving it power.Dec 11, 2020 · The bulletin applies to 2014 Nissan Versa vehicles built before 3N1CE2CP(*)EL 433025 and April 7, 2014. Nissan has come up with an ECM software patch for the problem. However, check the following before proceeding with the update. Follow these tests if you get a P059F Nissan Versa code and your vehicle is outside the build date included in the ... P1421 NISSAN - 0 votes . ... 2018 by anonymous. I have this code P1421 for my 08 Versa but there is no evident impact to the performance or even to the mpg's of the ...February 14, 2023 by Jason. P0455 in the Nissan Versa is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your Versa. But, whenever the check engine …2009 Nissan Versa V4 with engine code P1421, what can I do to fix this problem? asked Dec 18, 2017 by Melissa. nissan; versa; p1421; 0 votes. 1 answer 248 views. I have a 2010 Nissan Versa with the code P1421, is there a bulletin service for this car? asked Dec 17, 2017 by frank. p1421; nissan; versa; 36.8k questions 32.1k answersFeb 5, 2013 · P1421 is a code stored for cold start control. You will have to take it to a dealer so the can reprogram the ECM there is a service bulletin on it. Colin Stickland. 22516 Answers. Posted on May 07, 2009. SOURCE: i need to replace a nissan versa 2008 front bumper. just take it slowly and look for the fixing bolts , 3279 posts · Joined 2009. #2 · Mar 25, 2010. These cars do not really need a tune up. Old school tune up use to be cap, rotor, plugs, wires, fuel filter, air filter, new fluids. Our cars don't use a cap, rotor, don't have a serviceable fuel filter, the plugs are buried and not due for a change until 105k miles I believe, there isn't an spark ...=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====nonda Auto DIY Center is the biggest ...Nov 25, 2012 · I went to an auto zone for the free diagnostic, and it was throwing the code P1421. It turns out there is a service bulletin for this, with the possible causes listed as follows: Lack of intake air volume (block air filter) So I started my Nissan Versa SL 08 a few days ago and noticed the check engine light was on. I went to an auto zone for the free diagnostic, and it was throwing the code P1421. It turns out there is a service bulletin for this, with the possible causes listed as follows: Lack of intake air volume (block air filter)What if you want sex more often than your mate? Or vice versa? Too often the “deprived” partner will blame What if you want sex more often than your mate? Or vice versa? Too often ...What is dtc code p1421 nissan versa 2008 and what to do about it. p1421 is a code stored for cold start control. You will have to take it to a dealer so the can reprogram the ECM there is a service bulletin on it Read full answer. Nov 21, 2012 • 2008 Nissan Versa. 0 helpful.Marvin. Nissan Master 85,242 Answers. Posted on Nov 10, 2016. Possible causes - Lack of intake air volume (blocked air filter) - Fuel injection system (Clogged fuel injector or bad fuel pump) - Faulty Engine Control Module (ECM) - Reprogram ECM.The cost to diagnose the P1421 2008 Nissan Sentra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Oct 7, 2009 · Post by Faja » Fri Nov 13, 2009 3:25 pm. This is taken from a different website on a Nissan Quest: Code P1421 means cold start control problems. Possible cause .. 1 Lack intake air volume2 fuel injector3 ECM. Car is under warranty, call the dealer and let them figure it out. Top. 2009SentraSE-R. Posts: 36. this code refers to EVAP Emission Control System Incorrect Purge Flow, it can be tricky to diagnose because of the number of parts, I would first check the vacuum hoses between the purge valve and the air cleaner, then the purge valve and the canister, also check the fuel tank vent and fuel cap valve and gasket. any one of these can cause this ...What is dtc code p1421 nissan versa 2008 and what to do about it. p1421 is a code stored for cold start control. You will have to take it to a dealer so the can reprogram the ECM there is a service bulletin on it Read full answer. Nov 21, 2012 • 2008 Nissan Versa. 0 helpful.Code p1421 for nissan versa 2009. Nissan Cars & Trucks; Open Questions: 0 answers. I need main cap bearing torque specs for a 2006 Hummer H3 3.5l l5. Read full answer. Be the first to answer Jul 06, 2023 • Hummer Cars & Trucks. 0 answers. how do I fix the direction of air in my 2002 dodge intrepid. I can't defrost the windshield in …DTC Nissan P1421 Short Explanation - YouTube. Maxidot Nissan. 1.42K subscribers. Subscribed. 23. 6.2K views 3 years ago #diagnostictroublecode #nissan …The cost to diagnose the P1421 2009 Nissan Altima Sedan code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Advertisement What type of telescope should I buy? The type of telescope you should buy depends on the observing you want to do. Many amateur astronomers own more than one telescop... I have the engine code P1421 on my 2009 Nissan Versa 1.8L. asked ... Jan 4, 2024 · Understanding the P1421 Error Code. When the P1421 error code appears in your Nissan’s diagnostic system, it indicates a problem with the engine management system. P1421 nissan versa code 2015 pdf free However, before you do that, shops find that cleaning the throttle body usually solves the problem.See this post for instructions on how to clean an electronic throttle body.After you clean the throttle body, you must perform a throttle body relearn procedure to teach the ECM the new “home” position.Some common check engine light codes for a Nissan Versa include: P0300 (Random/Multiple Cylinder Misfire Detected), P0420 (Catalyst System Efficiency Below Threshold), P0171 (System Too Lean – Bank 1), P0442 (Evaporative Emission Control System Leak Detected), and P0113 (Intake Air Temperature Circuit High Input).The service memo linked in West Rock's post shows that the fuel pressure regulator is an issue from 2007-2009. So that means one of two things, either the fuel pump changed from 2009 to 2010, or Nissan has elected to not recognize the fuel pressure regulator as an issue in the 2010 and instead recommends changing the entire fuel pump.We would like to show you a description here but the site won’t allow us.2009 Nissan Versa V4 with engine code P1421, what can I do to fix this problem? asked Dec 18, 2017 by Melissa. nissan; versa; p1421; 0 votes. 0 answers 426 views. why does code p1421 show up after 100,000 miles-says to reprogram ecu..nissan-versa 2008. asked Sep 30, 2017 by anonymous. p1421; 36.8k questions 32.1k answersJan 27, 2024 · Nissan code P1421 refers to a specific fault code that is associated with the evaporative emissions system in Nissan vehicles. This code is often accompanied by the check engine light illuminating on the dashboard. How to fix code P0441 and P1421 Lexus RX 400h 100% ,

Code P1421 - What does Code P1421 mean? Thanks. Skip to content. Buy. Used Cars; New Cars; Certified Cars; New ... Used Nissan Versa. 381 Great Deals out of 11,741 listings starting at $600. Used Nissan GT-R. …. Ion color brilliance colors

code p1421 nissan versa

2009 Nissan Versa V4 with engine code P1421, what can I do to fix this problem? asked Dec 18, 2017 by Melissa. nissan; versa; p1421; 0 votes. 1 answer 248 views. I have a 2010 Nissan Versa with the code P1421, is there a bulletin service for this car? asked Dec 17, 2017 by frank. p1421; nissan; versa; 36.8k questions 32.1k answersSummary: NISSAN: VENT CONTROL VALVE REPLACEMENT. WHEN REPLACING THE EVAP CANISTER VENT CONTROL VALVE FOR REASON: USE THE ONE LISTED ON PAGE 2; FOR VENT CONTROL VALVE REPLACEMENT PROCEDURE, REFER TO THE APPROPRIATE SECTION OF THE ELECTRONIC SERVICE. Communication Number: NTB-10-061, Date: 2010-04-27.This code means that your vehicle was in an accident a. myairbags.com. 888-779-9029. airbag-module-reset airbag-module-resetairbag-codes. ... Nissan SRS Code B1425 Rear Collision Detection. Nissan SRS Code B1422 Side Collision Detection. Mitsubishi Airbag Code B1499 collision decision.Dec 21, 2020 · Nissan has issued a service bulletin # NTB09-116a to address a P1421 code COLD START CONTROL trouble code on all 2007 – 2010 Versa models with the MR18DE engine ONLY. The check engine light will appear and this Nissan P1421 code will be stored. Nissan p1421 - Cars & Trucks. Posted by Anonymous on Jan 28, 2014. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. Comment; Flag; More. Print this page; Share this page; Add Your Answer Ad. Add Your Answer. Video; Photos; Link; Add ...I have the engine code P1421 on my 2009 Nissan Versa 1.8L. asked Jan 17, 2018 by Robert Carney. nissan; versa; p1421; 0 votes. 1 answer 245 views. I have a 2010 Nissan Versa with the code P1421, is there a bulletin service for this car? asked Dec 17, 2017 by frank. p1421; nissan; versa +1 vote. 2 answers 330 views.To diagnose and repair the root cause of the P0421 code in your Nissan Versa, follow these steps: Verify the code : Use a scan tool to check for the P0421 code and any accompanying codes if present. Inspect the oxygen sensors : Check the pre- and post-catalytic converter oxygen sensors for signs of damage, and use a scan tool to view their live ... Here are the relevant service bulletins from Infiniti:FX50. 2009-2010. Infiniti TSB ITB08048FX35. 2009-2011. Infiniti TSB ITB11007 Nissan’s newest model was inspired by one of the most iconic designs in aeronautics: the swept wing. Nissan’s newest model was inspired by one of the most iconic designs in aeronau...Here’s a good P0420 diagnostic order for the Nissan Versa: 1. Check for Other Codes. The first thing you want to do when trying to fix P0420 in the Versa is to verify there aren’t any other trouble codes. Three types of codes can give clues as to what’s going on with your car. Misfire Codes.Understanding the P1421 Error Code. When the P1421 error code appears in your Nissan’s diagnostic system, it indicates a problem with the engine management system.P1421 OBDII is a fault code stored by the engine control module when it can’t properly control ignition timing and idle speed when the engine is started up under warm-up …The P1421 is "COLD START CONTROL". The ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. There are a few preliminary checks you can do here.The P1421 is "COLD START CONTROL". The ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. There are a few preliminary checks you can do here.2009 Nissan versa 120k miles with engine light on --code P1421 came up for ecm. was told to disconnect battery for 30 minutes and would reset --didn't work. then went on internet and ran thru procedur … read moreHere are the relevant service bulletins from Infiniti:FX50. 2009-2010. Infiniti TSB ITB08048FX35. 2009-2011. Infiniti TSB ITB11007.

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