P0791
Intermediate Shaft Speed Sensor A Circuit
P0791 is an OBD-II diagnostic trouble code meaning: Intermediate Shaft Speed Sensor A Circuit. Common causes: intermediate shaft speed sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- The gearbox goes into emergency mode
- Difficulty shifting gears
- Check Engine Light Is On
- Floating engine speed
- Deterioration in acceleration dynamics
Causes
- Intermediate shaft speed sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Transmission control module malfunction
- Damage to the ring gear with which the sensor operates
How to Fix
- Check the integrity of the wiring to the sensor
- Clean sensor connector contacts
- Check the sensor resistance (compare with standard values)
- Replace the intermediate shaft speed sensor if necessary
- Check for error codes in the transmission control module
Related codes
Error P0791 by Vehicle Brand
FAQ
What does the P0791 code mean?
P0791 is an OBD-II diagnostic trouble code that indicates: Intermediate Shaft Speed Sensor A Circuit
What causes a P0791 error code?
The most common causes of P0791 include: Intermediate shaft speed sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Transmission control module malfunction.
How do I fix a P0791 diagnostic trouble code?
To fix P0791: Check the integrity of the wiring to the sensor. Clean sensor connector contacts. Check the sensor resistance (compare with standard values). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0791?
Limited driving only, diagnose soon
How much does it cost to fix P0791?
The estimated repair cost for P0791 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat