P0791
Intermediate Shaft Speed Sensor A Circuit
The TCM detects an electrical fault on the intermediate shaft speed sensor A circuit. Used to compute shift slip and torque converter behavior.
The TCM detects an electrical fault on the intermediate shaft speed sensor A circuit. Used to compute shift slip and torque converter behavior.
Common causes
- high
Speed sensor failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-660
- medium
Wiring open or shorted
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-660
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0791 mean?
P0791 means "Intermediate Shaft Speed Sensor A Circuit". It is a generic OBD-II code that points to a fault in the transmission.
What are the most common causes of P0791?
speed sensor failed; wiring open or shorted — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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