P021D OBD Error Code:Problem & Solutions

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This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model.

Want to learn something more about this fault code? The OBD code decreased engine performance can be defined as a Cylinder 10 Injection Timing. There are special transistors present in the engine control module which are known as “drivers” which would turn the fuel injectors on as well as off in the fuel injection system. If the fuel injector is not controlled by the powertrain control module, then it would give rise to P021D fault code.

What causes this problem with the Cylinder 10 Injection Timing?

• There can be bad fuel injector
• Engine timing component might be quirky
• Some faults in the fuel injection solenoid
• Faults in the crankshaft or camshaft position sensor
• Defaults in the crankshaft or camshaft position sensor or circuit
• The fuel injector 10 might be faulty
• The wiring or connectors in fuel injector control circuit might be opened or shorted
• Open or shorted fuel injector 10 harness
• There can be bad electrical connection in the fuel injector 10 circuit

1. Fuel Injector - There can be some issues with the Fuel Injector due to which you may see P021D code appearing over and over again. Visit us to buy best quality Fuel Injector online.
2. Crankshaft Sensor - A lot of issues can arise do to defective Crankshaft Sensor. Did you just see P021D code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Camshaft Sensor - Faulty Camshaft Sensor can be the reason why P021D code is flashing. Visit us to purchase top notch Camshaft Sensor online.
4. Fuel Injection Harness/Wiring - It is an important auto part which needs full care. A faulty Fuel Injection Harness/Wiring can be a reason behind the flashing up of P021D code.
5. Fuel Tank - OBD Code P021D can appear because of faulty Fuel Tank. Visit us to buy quality Fuel Tank parts online.
6. Fuel Tank Pressure Sensor - There can be some issues with the Fuel Tank Pressure Sensor due to which you may see P021D code appearing over and over again. Visit us to buy best quality Fuel Tank Pressure Sensor online.
7. Fuel Temperature Sensor - Are you facing some faults in your Fuel Temperature Sensor? Don’t worry and get them replaced or else P021D code can turn up.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• The engine performance can start decreasing
• Distinctive odour of diesel
• Reduction in the overall fuel efficiency
• There can be an illumination in the service engine soon warning light
• Issue of engine misfire, sag, or stumble
• There can be an increase in fuel consumption

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• If there are some defects in the crankshaft or camshaft position sensor, then it should be repaired or replaced if needed
• Carefully replace the fuel injector
• The engine timing component should be working properly
• You must replace the open or shorted wiring or connectors in fuel injector control circuit

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:

If you want to diagnose a code P021D, then you would need a diagnostic scanner, a digital volt/ohmmeter, and a reliable vehicle information source. 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.

If the code is reset: If the vehicle is equipped with a common rail injection system, then you must utilize the DVOM 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 P021D 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 P021D Code

• There can be infirmity in the Fuel injector
• Faults in the powertrain control module
• Foible wiring