The P068C OBD-II code refers to an issue with the glow plug control circuit for cylinder 7 in diesel engines. This code indicates that the engine control module (PCM) has detected a low voltage or fault in the glow plug circuit.
What Does the P068C Code Mean?
The P068C code means that there is a malfunction in the glow plug control circuit for cylinder 7. This can lead to difficulties in starting the engine, especially in cold weather, as the glow plugs are responsible for preheating the combustion chamber before ignition.
What Causes the P068C Code?
Common causes of the P068C code include:
- Glow plug failure
- Glow plug wiring harness failure
- Powertrain Control Module (PCM) failure
What Are the Symptoms of the P068C Code?
Symptoms associated with the P068C code typically include:
- Engine may not start
- Hard or no start, especially in cold weather
How Serious Is the P068C Code?
The P068C code is considered urgent. It indicates a significant malfunction that can lead to severe damage to the vehicle or pose safety risks for the driver and passengers. Immediate attention is recommended.
How to Diagnose the P068C Code
To diagnose the P068C code, a professional mechanic will typically follow these steps:
- Use an OBD-II scanner to confirm the code and check for other related codes.
- Inspect the glow plug and its wiring for any visible signs of damage or corrosion.
- Test the glow plug with a multimeter to ensure it is functioning correctly.
- Check the PCM for proper operation and connections.
Common Repairs for the P068C Code
Common repairs needed for the P068C code may include:
- Replacing the faulty glow plug
- Repairing or replacing the glow plug wiring harness
- Reprogramming or replacing the Powertrain Control Module (PCM)
How Much Does It Cost to Fix the P068C Code?
The cost to fix the P068C code can vary widely depending on the specific repair needed. On average, you might expect to pay between $150 and $600, depending on labor costs and parts.
Can I Fix the P068C Code Myself?
If you have automotive repair experience and the right tools, you may be able to diagnose and fix the P068C code yourself. However, for those unfamiliar with diesel engine systems, it may be advisable to seek professional assistance to avoid further complications.
