P03B6

Cylinder 4 Pressure Sensor Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

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

P03B5 P03B7 P0304