AutoCodes – Generic – B1201

B1201 Code - Steering Wheel Audio Switch Pack 2

Quick Answer

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. Common causes include 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. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1201 indicates Steering Wheel Audio Switch Pack 2.
Common causes: Common causes include 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.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 30,814

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1201 Description

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.

OBDII Code B1201 - Steering Wheel Audio Switch Pack 2 - AutoCodes.com — B1201 Code - Steering Wheel Audio Switch Pack 2

What does this mean?

What are the Possible Causes of the DTC B1201?

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)

How to Fix the DTC B1201?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1201 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1201 code?

Need more information on how to fix the B1201 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1201 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1201 Ford — Steering Wheel Audio Switch Pack 2
B1201 Infiniti — Left Side Front Curtain Air Bag Module Short
B1201 Lincoln — Steering Wheel Audio Switch Pack 2
B1201 Mercury — Steering Wheel Audio Switch Pack 2
B1201 Nissan — Left Side Front Curtain Air Bag Module Short

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1201 Code

1. What are the common symptoms of OBDII code B1201 (Steering Wheel Audio Switch Pack 2)?

The common symptoms of B1201 include non-functional audio controls on the steering wheel and issues with adjusting volume or changing tracks.

2. What are the possible causes of OBDII code B1201?

The possible causes of B1201 can include a faulty steering wheel audio switch pack, damaged wiring connections, or a malfunctioning control module.

3. How can I diagnose the OBDII code B1201?

Diagnosis of B1201 involves using a scan tool to retrieve the trouble code, inspecting the wiring and connections related to the steering wheel audio switch pack, and testing the components for proper functionality.

4. Can I continue driving with OBDII code B1201 present?

While it may be possible to continue driving with B1201, it is recommended to address the issue promptly to avoid potential safety hazards and inconvenience.

5. How can I repair OBDII code B1201?

Repairing B1201 typically involves replacing the faulty steering wheel audio switch pack, repairing any damaged wiring, and resetting the control module to clear the trouble code.

6. Is it possible to reset OBDII code B1201 without repairs?

Resetting the code without addressing the underlying issue may temporarily clear the fault code, but it is likely to reappear if the root cause is not resolved.

7. Are there any DIY tips for fixing OBDII code B1201?

DIY tips for B1201 repair may include checking and cleaning the wiring connections, ensuring proper alignment of the steering wheel audio switch pack, and following manufacturer-specific repair guides.

8. Can weather conditions affect OBDII code B1201?

Extreme weather conditions, such as excessive heat or moisture, can potentially impact the performance of the steering wheel audio switch pack and contribute to the occurrence of B1201.

9. How long does it take to repair OBDII code B1201?

The repair time for B1201 can vary depending on the extent of the issue, availability of parts, and the expertise of the individual performing the repair. It may range from a few hours to a day.

10. Will OBDII code B1201 cause other electrical problems in the vehicle?

While B1201 is specifically related to the steering wheel audio switch pack, unresolved issues with this component can potentially lead to other electrical problems in the vehicle over time if left unaddressed.