Guide To P021C OBD Error Code Solutions

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The P021C can be described as Cylinder 9 Injection Timing.

 

If the P021C fault code is stored, then it would mean that the malfunction has been detected in the powertrain control module in the injection timing circuit for a specific cylinder for the car engine. You can always consult a reliable vehicle information source to know the exact location of the cylinder for the vehicle in which P021C trouble code is triggering. The P021C is stored in vehicles which are equipped with diesel engines. Extreme levels of fuel pressure are required by clean burning diesel engines.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

 

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

 

What causes this problem with the Cylinder 9 Injection Timing?

 

• Faults in the crankshaft or camshaft position sensor or circuit
• There can be defaults in the fuel injector 9
• The fuel injection solenoid might be defective
• There can be failure in the engine timing component
• There can be poor electrical connection in the fuel injector 9 circuit
• Open or shorted wiring or connectors in fuel injector control circuit
• The fuel injector can turn out to be bad
• The fuel injector 9 harness might be opened or shorted
• Defective crankshaft or camshaft position sensor

1. Fuel Injector - Do you remember when was the last time you got your car Fuel Injector checked up? A defective Fuel Injector can cause a lot of issues like displaying P021C code.
2. Crankshaft Sensor - Poor Crankshaft Sensor can cause a lot of difficulties, so why not get it replaced at time?
3. Camshaft Sensor - Are there some faults in your Camshaft Sensor? Don’t waste time and get them replaced or else P021C code can turn up.
4. Fuel Injection Harness/Wiring - OBD Code P021C can appear because of faulty Fuel Injection Harness/Wiring.
5. Fuel Tank - Everything is fine with Camshaft Sensor and still P021C code triggering? Then you must get your Fuel Tank checked.
6. Fuel Tank Pressure Sensor - There can be some issues with the Fuel Tank Pressure Sensor due to which you may see P021C code appearing over and over again. Visit us to buy best quality Fuel Tank Pressure Sensor online.
7. Fuel Temperature Sensor - A lot of issues can arise do to defective Fuel Temperature Sensor. Did you just see P021C code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P021C code by mentioning some major symptoms below:

 

Common Symptoms

 

• There can be problem of engine misfire, sag, or stumble
• Service engine soon warning light can start appearing
• An overall lack of engine performance
• The fuel efficiency can start reducing
• The fuel consumption can start rising
• There can be odour of diesel

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P021C:

 

• The fuel injector should be replaced
• Replace the open or shorted wiring or connectors in fuel injector control circuit
• If there are some defects in the crankshaft or camshaft position sensor, then it should be repaired or replaced if needed
• Make sure that the engine timing component is in perfect condition

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Fuel injector solenoid, injection pump, Performance fuel injectors and many more. Now all your problems would vanish within no time.

Here are some steps which you should follow in order to diagnose this fault code:

 

• You must have a diagnostic scanner, a digital volt/ohmmeter, and a reliable vehicle information source to diagnose a code P021C.
• Then you can start with a visual inspection of high-pressure fuel system related components and wiring harnesses. Carefully search for signs of fuel leakage as well as damage to wiring or connectors. Check for technical service bulletins which pertain to the vehicle, symptoms, and codes. If such a tsb is located, it will provide very helpful information for diagnosing this code.
• Then connect the scanner to the vehicle diagnostic port and retrieve all stored trouble codes and freeze frame data. You can always make a note of this information as it may prove beneficial as the diagnosis unfolds. Then clear the codes and test-drive the vehicle to see if the code is reset. If there is crankshaft sensor or camshaft position sensor codes stored, then you should diagnose and repair those before attempting to diagnose the injector timing code.

You must utilize the DVOM if your vehicle is equipped with a common rail injection system and the vehicle information source to test the injector solenoid for the cylinder. Any component which fails to comply with manufacturer’s specifications should be replaced before proceeding.

 

After suspicious parts are repaired or replaced, clear any codes which may have been stored during testing and test drive the vehicle until the PCM enters readiness mode or the code is reset. If the PCM does enter readiness mode you know that the repair was successful. If the code is reset – then you can assume that you still have a problem.

 

If the injector solenoid is within specs, unplug the controller and use the DVOM to test system circuits for shorts or opens. Repair or replace system circuits which do not conform to manufacturer’s specifications according to the pin-out chart which is located in your vehicle information source.

 

Unit injector failure can almost always be attributed with engine timing component failure or some type of high-pressure fuel system leak.

 

• Make sure that the P021C code should be diagnosed only by a qualified technician due to extreme fuel pressure
• Determine which type of high-pressure fuel system the vehicle is equipped with before you start your diagnosis

Common Mistakes When Diagnosing The P021C Code

 

• Faults in the powertrain control module
• Infirmity in the Fuel injector
• Foible wiring