P1797
Park/Neutral Position Switch Signal Malfunction
P1797 is an OBD-II diagnostic trouble code meaning: Park/Neutral Position Switch Signal Malfunction. Common causes: gear selector position sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Engine won't start
- Incorrect indication of selector position on the dashboard
- Floating idle speed
- Check Engine light comes on
- The vehicle can be started in positions other than P or N
Causes
- Gear selector position sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Mechanical damage to the sensor or selector lever
- Engine control unit malfunction
How to Fix
- Check the condition of the sensor and its fastening
- Check the integrity of wiring and connectors
- Measure the sensor resistance in different selector positions
- If necessary, replace the P/N position sensor
- Check and clean ECU connector contacts
Related codes
Error P1797 by Vehicle Brand
FAQ
What does the P1797 code mean?
P1797 is an OBD-II diagnostic trouble code that indicates: Park/Neutral Position Switch Signal Malfunction
What causes a P1797 error code?
The most common causes of P1797 include: Gear selector position sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Mechanical damage to the sensor or selector lever.
How do I fix a P1797 diagnostic trouble code?
To fix P1797: Check the condition of the sensor and its fastening. Check the integrity of wiring and connectors. Measure the sensor resistance in different selector positions. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1797?
Yes, but get it checked soon
How much does it cost to fix P1797?
The estimated repair cost for P1797 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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