P03B5

Cylinder 4 Pressure Sensor Circuit Low

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 Illuminates

Causes

Cylinder 4 pressure sensor malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
ECU malfunction

How to Fix

Check the integrity of the sensor wiring harness
Check the connections and connectors of the sensor
Check the functionality of the pressure sensor
Replace sensor if necessary
Check for errors in the ECU

Related codes

P03B0 P03B1 P03B6 P0304