P06C7 - OBD Trouble Code

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The trouble code P06C7 can be defined as Cylinder 3 Glow Plug Incorrect.

The Glow Plug is utilized on diesel engines to preheat the cylinder before the engine is started. Now if the engine control module would detect the glow plug for cylinder three is not functioning properly, then the P06C7 would start appearing.

Do you want to gain some more knowledge about the P06C7 trouble code?

If the error code P06C7 is appearing, then it would mean that the powertrain control module (PCM) has detected a discrepancy in the glow plug control circuit for cylinder #3. You can always consult a source of reliable vehicle information to determine the location of the #3 cylinder for your year / make / model / powertrain configuration.

What causes this problem with the Cylinder 3 Glow Plug Incorrect?

• Defaults in the glow plug connector
• Defective glow plug
• The glow plug control circuit might be opened or shorted
• Some flaws in the glow plug timer

1. Engine Wiring Harness - The P06C7 code can also arise due to some issues in Engine Wiring Harness So it is advised to replace them as soon as possible.
2. Engine Control Module - Do you remember when was the last time you got your car engine control module checked up? A damaged engine control module can cause a lot of issues like displaying P06C7 code.
3. Body Control Module Component - Body Control Module Component should never be neglected. May be there is some fault in it due to which P06C7 code may start flashing.
4. Glow Plug Connector - Is your Glow Plug Connector damaged or broken? Don’t worry as we have solutions for all your problems.
5. Electronic Control Unit - Defective car Electronic Control Unit can be a major reason why P06C7 code depicts. So, make sure to replace it online so that you don’t have to face any further issues.
6. Powertrain Control Module - Everything is okay with the Electronic Control Unit and still OBD code P06C7 triggering? Then there must be some defects in Powertrain Control Module. Replace them as soon as possible.

Willing to know some common symptoms of OBD Trouble Code P06C7? Your wish is our demand. Have a look at them below:

Common Symptoms

• Immoderate black smoke from exhaust
• Engine drivability issues
• Some engine misfire codes may be stored
• Slow down engine start up
• Diminishing fuel efficiency

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 P06C7:

• If there are a few defects in the glow plug then it should be replaced
• Restore the opened or shorted glow plug control circuit
• The glow plug connector might be loose or faulty. So, you must get it repaired or replaced
• Carefully inspect the glow plug timer

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If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• The first thing which you should do is to use a diagnostic scanner, a reliable source of vehicle information, and a digital volt/ohmmeter (DVOM) in order to arrive at an accurate diagnosis of a code P06C7. Use the vehicle information source to search for applicable technical service bulletins (TSB). If you locate a TSB that matches the vehicle make and model, symptoms exhibited, and the code stored, it will help you to arrive at a diagnosis
• You may also need to obtain diagnostic flow charts, wiring diagrams, connector face views, connector pinout charts, component locations, and component testing procedures/specifications from the vehicle information source
• All this information will be needed to correctly diagnose the stored code P06C7. Now once you have performed a careful visual inspection of all glow plug and glow plug control wiring and connectors, connect the diagnostic scanner to the vehicle diagnostic port. Then retrieve all stored codes and freeze frame data and record it for later
• After that test drive the vehicle to see if the code P06C7 is reset. Drive until one of two things happens: Either the PCM enters readiness mode or the code is reset
• If the code is reset, continue with the diagnosis. If it is not, you are dealing with an intermittent condition which may have to worsen before an accurate diagnosis may be achieved. Here is a tip that the service manual will not give you
• The best way to test glow plugs is to remove them and apply battery voltage. If the glow plug glows bright red, it is good. If the glow fails to heat up, and you want to take time to test it with your DVOM, you will likely discover that it does not meet manufacturer's specifications for resistance
• Be careful not to burn yourself or start a fire when performing this test. If the glow plugs appear to be working properly, use the scanner to activate the glow plug timer and test for battery voltage and a ground at the glow plug connector. If no voltage is present, test the power supply for the glow plug timer or glow plug controller
• Test all related fuses and relays as recommended by the manufacturer. As a rule, it best to test system fuses and fusible links with the circuit loaded
• The fuse for a circuit which is not loaded may appear to be functional (when it is not) and lead you down the wrong diagnostic path. If all fuses and relays appear functional, use the DVOM to test output voltage at the glow plug timer or PCM (wherever it originates)
• If voltage is detected at the glow plug timer or PCM, suspect that you have an open or shorted circuit. You may seek out the cause of the discrepancy or simply replace the circuit

Common Mistakes When Diagnosing The P06C7 Code

• Glow plug control module might start failing
• Some faults in the glow plug
• Failure in the glow plug wiring harness
• Many at times it is thought that a P06C7 cannot be caused by a defective glow plug because this is a control circuit code. Don't be deceived; a bad glow plug may cause a variation in the control circuit that result in just such a code
• A lot of people make a big mistake of attempting to diagnose the wrong cylinder. Save yourself a big headache and make sure that you are addressing the correct cylinder before beginning your diagnosis