Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- Intermediate shaft speed sensor circuit is open or shorted - Intermediate shaft speed sensor poor electrical connection - Faulty intermediate shaft speed sensor - Faulty Engine Control Module (ECM)

When Detected

P0791 code is detected when the input speed sensor voltage is more than 1.9V or less than 0.1V for 2 seconds or more