B113B - Rear Audio Switch Circuit Short to Ground
B113B Possible Causes
- Faulty Rear Audio Switch
- Rear Audio Switch harness is open or shorted
- Rear Audio Switch circuit poor electrical connection
- Faulty Rear Audio and Temperature Control (RATC) Module
Cost of diagnosing the B113B code
The cost of diagnosing the B113B code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
B113B Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
The Rear Audio and Temperature Control (RATC) Module receives voltage and ground through the circuit. The RATC module receives input from the rear auxiliary audio controls through the circuit. It then sends these signals to the audio unit over the Audio Corporate Protocol (ACP) network through circuits. The RATC module sets the OBDII code when a short to ground is detected on the circuitry between the RATC module and the rear auxiliary audio switch.
B113B Information for specific makes