P03B6
Cylinder 4 Pressure Sensor Circuit High
P03B6 is an OBD-II diagnostic trouble code meaning: Cylinder 4 Pressure Sensor Circuit High. Common causes: malfunction of the cylinder pressure sensor, open or shorted wiring harness. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Check Engine Light Is On
Causes
- Malfunction of the cylinder pressure sensor
- Open or shorted wiring harness
- Contact corrosion
- Engine ECU malfunction
- Sensor power problems
How to Fix
- Check the integrity of the wiring harness
- Measure the resistance of the pressure sensor
- Check contacts for corrosion
- Flash the ECU if required
- Replace pressure sensor if necessary
Related codes
Error P03B6 by Vehicle Brand
FAQ
What does the P03B6 code mean?
P03B6 is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Pressure Sensor Circuit High
What causes a P03B6 error code?
The most common causes of P03B6 include: Malfunction of the cylinder pressure sensor; Open or shorted wiring harness; Contact corrosion; Engine ECU malfunction.
How do I fix a P03B6 diagnostic trouble code?
To fix P03B6: Check the integrity of the wiring harness. Measure the resistance of the pressure sensor. Check contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P03B6?
Limited driving only, diagnose soon
How much does it cost to fix P03B6?
The estimated repair cost for P03B6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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