P0398
Cylinder 1 Pressure Sensor Circuit High
P0398 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Pressure Sensor Circuit High. 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
- Problems with contacts in connectors
- ECU malfunction
How to Fix
- Check the integrity of the sensor wiring harness
- Check contacts in connectors
- Test the pressure sensor with a multimeter
- Replace sensor if necessary
- Check the operation of the computer
Related codes
Error P0398 by Vehicle Brand
FAQ
What does the P0398 code mean?
P0398 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Pressure Sensor Circuit High
What causes a P0398 error code?
The most common causes of P0398 include: Malfunction of the pressure sensor in cylinder 1; Open or short circuit in wiring harness; Problems with contacts in connectors; ECU malfunction.
How do I fix a P0398 diagnostic trouble code?
To fix P0398: Check the integrity of the sensor wiring harness. Check contacts in connectors. Test the pressure sensor with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0398?
Limited driving only, diagnose soon
How much does it cost to fix P0398?
The estimated repair cost for P0398 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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