P0397

Cylinder 1 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

Malfunction of the pressure sensor in cylinder 1
Open or short circuit in wiring harness
Poor contact in the sensor connector
Problems with the ECU

How to Fix

Check the integrity of the wiring harness to the pressure sensor
Check the contacts in the sensor connector
Replace pressure sensor in cylinder 1 if necessary
Check the operation of the computer

Related codes

P0396 P0398 P0300