The P068E code is an OBD-II trouble code that indicates a problem with the glow plug control circuit for cylinder 8 in diesel engines. This code is triggered when the Engine Control Module (PCM) detects that the glow plug is not functioning properly.
What Does the P068E Code Mean?
When the PCM sets the P068E code, it signifies that the glow plug circuit for cylinder 8 has a low voltage reading, which often leads to inadequate preheating of the cylinder before starting the engine. This can lead to starting difficulties, particularly in cold weather.
What Causes the P068E Code?
Several issues can trigger the P068E code, including:
- Glow plug failure
- Wiring harness failure related to the glow plug
- Powertrain Control Module (PCM) malfunction
What Are the Symptoms of the P068E Code?
The primary symptom associated with the P068E code is the engine’s inability to start or a hard start, especially in cold weather conditions. This can be frustrating and may lead to further complications if not addressed.
How Serious Is the P068E Code?
The P068E code is categorized as urgent. It indicates significant malfunctions that require immediate attention to prevent severe damage to the vehicle or to ensure the safety of the driver and passengers.
How to Diagnose the P068E Code
To diagnose the P068E code, a mechanic should follow these steps:
- Use an OBD-II scanner to confirm the P068E code and check for any other related codes.
- Inspect the glow plug and its wiring harness for any visible damage or corrosion.
- Test the glow plug for continuity and proper operation.
- Check the PCM for proper function and any software updates.
Common Repairs for the P068E Code
Common repairs associated with the P068E code include:
- Replacement of the faulty glow plug
- Repair or replacement of the glow plug wiring harness
- Replacing or reprogramming the PCM, if necessary
How Much Does It Cost to Fix the P068E Code?
The cost to fix the P068E code can vary significantly based on the specific issue. Glow plug replacement may range from $100 to $300, while wiring repairs can vary. If the PCM needs to be replaced, costs can exceed $1,000. Always consult with a qualified mechanic for an accurate estimate.
Can I Fix the P068E Code Myself?
While some DIY enthusiasts might tackle glow plug replacement or wiring repairs, it is crucial to conduct a proper diagnostic to ensure the correct issue is addressed. If you are unsure, it is advisable to seek professional help to avoid unnecessary repairs and ensure safety.
