P06C9 OBD Error Code: Problem & Solutions

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The P06C9 fault code can be identified as Cylinder 5 Glow Plug Incorrect. 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.

Do you want to gain some more knowledge about the P06C9 trouble code?

 

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 five is not functioning properly, then the P06C9 would start appearing.

 

What causes this problem with the Cylinder 5 Glow Plug Incorrect?

 

• Some faults in the glow plug
• There can be opened or shorted glow plug control circuit
• The glow plug connector might be loose or faulty
• Quirks in the glow plug timer

1. Glow Plug Connector - Defective car Glow Plug Connector can be a major reason why P06C9 code depicts. So, make sure to replace it online so that you don’t have to face any further issues.
2. Engine Control Module - Everything is okay with the Glow Plug Connector and still OBD code P06C9 triggering? Then there must be some defects in Engine Control Module. Replace them as soon as possible.
3. Electronic Control Unit - P06C9 code flashing? Get your Electronic Control Unit inspected from a mechanic.
4. Body Control Module Component - If everything is alright with PCM, then there is surely some defect in Body Control Module Component. Get it replaced before the situation gets worse.
5. Engine Wiring Harness - P06C9 code can display due to some issues in the Engine Wiring Harness. So, it is very important to replace the Engine Wiring Harness with us at equitable prices.
6. Powertrain Control Module - Do you remember when was the last time you got your car Powertrain Control Module checked up? A dirty Powertrain Control Module can cause a lot of issues like displaying P06C9 code.

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

 

• Engine start up can start delaying
• Reduction in the overall fuel efficiency
• Engine misfire codes may be stored
• Intemperate black smoke from exhaust
• Some issues related to engine drivability

The repairs which you will have to do to correct this fault code are simply straightforward; you can surely pinpoint the necessary repairs on the basis of your diagnosis. Have a look at some common fixes:

 

• Replace the quirky glow plug
• Make sure to repair or replace the opened or shorted glow plug control circuit
• It is essential to replace the glow plug connector
• The faulty glow plug timer should be restored

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 Glow Plug Timer, Trailer Wiring Harness, PCM Car, ECM Car, Diesel Glow Plugs, Radio Harness, Wiring Harness Kit, Stereo Wiring Harness, Painless Wiring Harness and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this trouble code, then you must follow the steps which are mentioned here as below:

 

• A diagnostic scanner, a reliable source of vehicle information, and a digital volt/ohmmeter (DVOM) will be required in order to arrive at an accurate diagnosis of a code P06C9
• 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 P06C9
• 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 P06C9 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 P06C9 Code

 

• Failure in the glow plug control module
• Glow plug might be defective
• Flaws in the glow plug wiring harness
• Many a times it is thought that a P06C9 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 results 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