P234C

Cylinder 9 Pressure Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Unstable engine operation
Power reduction
Increased fuel consumption
Check Engine light comes on
Dips during acceleration

Causes

Open or short circuit in the sensor circuit
Pressure sensor malfunction
Poor contact in the sensor connector
Wiring harness damage
Problems with the engine control unit

How to Fix

Check the integrity of the sensor circuit
Check the sensor connector and contacts
Replace pressure sensor if necessary
Check wiring harness for damage
Diagnose the engine control unit

Related codes

P234A P234B P234D