P03C3
Cylinder 5 Pressure Too High
P03C3 is an OBD-II diagnostic trouble code meaning: Cylinder 5 Pressure Too High. Common causes: malfunction of the cylinder pressure sensor, clogged or leaking fuel injectors. Estimated repair cost: $111–556.
Symptoms
- Engine troubles
- Power Loss
- Knock or detonation
- Engine overheating
- Increased fuel consumption
Causes
- Malfunction of the cylinder pressure sensor
- Clogged or leaking fuel injectors
- Incorrect valve adjustment
- Wear of the cylinder-piston group
- Knock sensor defect
- Ignition system malfunction
How to Fix
- Diagnostics of the cylinder pressure sensor
- Checking fuel injectors
- Ignition system diagnostics
- Valve adjustment
- Replacement of worn parts of the CPG
- Updating the ECU firmware (if necessary)
Related codes
Error P03C3 by Vehicle Brand
FAQ
What does the P03C3 code mean?
P03C3 is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Pressure Too High
What causes a P03C3 error code?
The most common causes of P03C3 include: Malfunction of the cylinder pressure sensor; Clogged or leaking fuel injectors; Incorrect valve adjustment; Wear of the cylinder-piston group.
How do I fix a P03C3 diagnostic trouble code?
To fix P03C3: Diagnostics of the cylinder pressure sensor. Checking fuel injectors. Ignition system diagnostics. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P03C3?
Limited driving only, diagnose soon
How much does it cost to fix P03C3?
The estimated repair cost for P03C3 is $111–556. Actual cost depends on your vehicle, location, and labor rates.
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