P0397
Cylinder 1 Pressure Sensor Circuit Low
P0397 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Pressure Sensor Circuit Low. Common causes: malfunction of the pressure sensor in cylinder 1, open or short circuit in wiring harness. Estimated repair cost: $56–167.
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
Error P0397 by Vehicle Brand
FAQ
What does the P0397 code mean?
P0397 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Pressure Sensor Circuit Low
What causes a P0397 error code?
The most common causes of P0397 include: 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 do I fix a P0397 diagnostic trouble code?
To fix P0397: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0397?
Limited driving only, diagnose soon
How much does it cost to fix P0397?
The estimated repair cost for P0397 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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