Engine-Codes - Generic - B1201

B1201 Code - Steering Wheel Audio Switch Pack 2

- Code Popularity: 30,150 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC B1201?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Steering Wheel Audio Switch Pack 2
  • Steering Wheel Audio Switch Pack 2 harness is open or shorted
  • Steering Wheel Audio Switch Pack 2 circuit poor electrical connection
  • Faulty Audio Control Module (ACM) or Accessory Protocol Interface Module (APIM)

Code Tech Notes

B1201:1C - Steering Wheel Audio Switch Pack 2 Circuit Voltage Out of Range
B1201:63 - Steering Wheel Audio Switch Pack 2 Circuit/Component Protection Time-Out

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How to Fix the DTC B1201?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B1201 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B1201 Code Mean?

Voltage is sent from the Audio Control Module (ACM) or Accessory Protocol Interface Module (APIM) to the steering wheel controls, and the same module grounds the return circuit. The VOL-, VOL+, SEEK- and SEEK+ switches share signal and return circuits, while the VOICE, MEDIA, PHONE and OK switches share separate signal and return circuits. For all configurations, when a switch is pressed, the voltage is routed through a specific resistor value for each function. The ACM (or APIM) then uses the reference voltage to determine which control input function has been selected. The OBDII code is set by the navigation ACM when the reference voltage to the steering wheel controls is out-of-range. This can be caused by a number of different failures on the steering wheel controls circuit except for a stuck switch or a short to ground in the signal return circuit.

B1201 Code - Steering Wheel Audio Switch Pack 2

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