C1859
PRNDL Input Sensor Circuit Failure
C1859 is an OBD-II diagnostic trouble code meaning: PRNDL Input Sensor Circuit Failure. Common causes: open or short in the prndl sensor wiring harness, oxidation or poor contact in the sensor connector. Estimated repair cost: $33–167.
Symptoms
- Incorrect display of the current gear on the dashboard
- Problems starting the engine (for example, the car only starts in neutral)
- The car may go into emergency mode
Causes
- Open or short in the PRNDL sensor wiring harness
- Oxidation or poor contact in the sensor connector
- Malfunction of the gear selector position sensor itself
- Problems with the engine control unit
How to Fix
- Check the integrity of the PRNDL sensor wiring harness
- Clean the contacts in the sensor connector and check the quality of the connection
- Check the sensor resistance using a multimeter
- If necessary, replace the gear selector position sensor
- Flash or replace the ECU if it is suspected of being faulty
FAQ
What does the C1859 code mean?
C1859 is an OBD-II diagnostic trouble code that indicates: PRNDL Input Sensor Circuit Failure
What causes a C1859 error code?
The most common causes of C1859 include: Open or short in the PRNDL sensor wiring harness; Oxidation or poor contact in the sensor connector; Malfunction of the gear selector position sensor itself; Problems with the engine control unit.
How do I fix a C1859 diagnostic trouble code?
To fix C1859: Check the integrity of the PRNDL sensor wiring harness. Clean the contacts in the sensor connector and check the quality of the connection. Check the sensor resistance using a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1859?
Limited driving only, diagnose soon
How much does it cost to fix C1859?
The estimated repair cost for C1859 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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