P0791

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

1. Check the integrity of the wiring to the sensor
2. Clean sensor connector contacts
3. Check the sensor resistance (compare with standard values)
4. Replace the intermediate shaft speed sensor if necessary
5. Check for error codes in the transmission control module

Related codes

Error P0791 by Vehicle Brand