Error Code P069C: What It Means & What To Do?

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What causes the P069C error to get stored in your vehicle? Before the start of the engine, glow plug is used for preheating the cylinder. If the glow plugs for cylinder 10 is low and not functioning, the powertrain control module will set the P069C code.

The heat which is essential to begin the combustion during cold temperature is given by glow plugs. During the first start of engine, before and during cranking, glow plugs are excited. The coolant temperature and voltage of the glow plug is observed by the engine control module. If the voltage of feedback is not within the boundary between the controllers to the ECM, this error code will be set in your vehicle.

What causes this problem with the Cylinder 10 Glow Plug Control Circuit Low?

• Deprived glow plugs.
• Shorted or exposed glow plug circuit.
• Imperfect glow plug connector.
• Broken glow plug timer.

1. Glow Plug Relay - Check for the suitable connection of glow plug relay. If not, repair them properly.
2. Glow Plug Timer - Looking for the right spare part? Get them from Parts Avatar at a reasonable price online.
3. Electrical Component - Every segment of your engine system has to function routinely. If not it can give rise to this P069C error. Check for errors and substitute them as needed.
4. Glow Plug Circuit - Look for apt linking of glow plug circuits. The brightness will be less if not linked properly. Replace with the right replacement part from Parts Avatar.
5. PCM - A damaged PCM is a common error in most vehicles and it needs to be changed immediately to avoid P069C error code.
6. Starter Relay - If your vehicle find difficulty during the start, then it’s because of a damaged starter relay. Change the broken part as desired.

Willing to know some common symptoms of OBD Code P069C? Your wish is our demand. Have a look at them below:

Common Symptoms

• Extreme black smoke from exhaust.
• Engine drive issues.
• Tardy engine start up
• less fuel efficiency.
• Engine misfire errors.

We have listed out some ways which would help you to correct the occurrence of OBD Code P069C. They are mentioned here as follows:

• The original multi-displacement system seems to turn off opposite pairs of cylinders. P069C code involves a rich diagnostics procedure, including the engine trouble codes on the air conditioning display. Yet, the system was troublesome, misread by customers, and led to the technology being speedily aged.

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If you want to easily diagnose this P069C fault code, then all you have to do is to follow the steps which are mentioned below:

• In order to correctly diagnose you will need a scanner, important source of information and a DVOM. Search for an exact TSB and find it to equalize the symptoms, vehicles model and make and other stored codes to help resolving the error code.
• You will also want additional information like diagnostic flowcharts, wire diagrams, connector face views, connector pinout charts, component positions, and testing procedure to correctly analyze the error code.
• Visually examine the glow plug, glow plug control wires, connectors and attach the scanner to the vehicle to recover codes and freeze frame data. Test drive the vehicle and you will see either the PCM will arrive to readiness mode or it will be reset. Continue analyzing if the code is reset. If not, there will be an uneven condition and you have to worsen it for correct diagnosis.
• It is always fine to eliminate glow plugs and apply the voltage. If it lights red, it’s good. If not, test it with a DVOM to meet the requirement of the manufacturer. Be cautious while executing this test.
• If the glow works appropriately, trigger the glow plug timer and test the voltage with the aid of scanner. If you don’t see the voltage, test the glow plug timer/ controller for power supply. Test all its related fuses and relays as said by manufacturer of the company with loaded circuit. The fuse which is not full with circuit will seem to function normally, but it will clue to the wrong path.
• If both the fuse as well as relay function well, test the output voltage with a DVOM. If you discover the voltage, there can be open or short circuit which you can substitute simply.
• As it is a control circuit code, the mistake can happen as a result of faulty glow plug. But a corrupt glow plug can only be a reason which fallouts in error code.
• Confirm that you make a diagnosis of the right cylinder as it can save you from a big headache.

Common Mistakes When Diagnosing the P069C Code

• Broken Glow plug control module.
• Damaged Glow plug.
• Glow plug wiring harness defective.

P069D - Cylinder 10 Glow Plug Control Circuit High