B1605 Cadillac Code - Mirror Motor Horizontal Circuit
Quick Answer
The Driver Door Module (DDM) or Passenger Door Module (PDM) controls the mirror horizontal and vertical motors through the use of bi-directional motor controls. Common causes include Faulty Driver/Passenger Rearview Mirror Motor, Driver/Passenger Rearview Mirror Motor harness is open or shorted, Driver/Passenger Rearview Mirror Motor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1605 Cadillac indicates Mirror Motor Horizontal Circuit.
- Common causes
- Common causes include Faulty Driver/Passenger Rearview Mirror Motor, Driver/Passenger Rearview Mirror Motor harness is open or shorted, Driver/Passenger Rearview Mirror Motor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1605 Cadillac Description
Horizontal controls operate in the same manner with the mirror motor horizontal control circuit supplying voltage or ground and the mirror motor common control circuit supplying voltage or ground to the mirror horizontal motor when the mirror is commanded right and left.
What are the Possible Causes of the DTC B1605 Cadillac?
- Faulty Driver/Passenger Rearview Mirror Motor
- Driver/Passenger Rearview Mirror Motor harness is open or shorted
- Driver/Passenger Rearview Mirror Motor circuit poor electrical connection
- Faulty Driver Door Module (DDM) or Passenger Door Module (PDM)
How to Fix the DTC B1605 Cadillac?
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.
Code Tech Notes
B1605 02 Mirror Motor Horizontal Circuit Short to Ground
B1605 04 Mirror Motor Horizontal Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1605 Cadillac 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.
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Frequently Asked Questions about B1605 Cadillac Code
1. What are the common symptoms of OBDII code B1605 in a Cadillac related to the Mirror Motor Horizontal Circuit?
- Common symptoms include the power mirror not adjusting horizontally or moving erratically.
2. What are the potential causes of OBDII code B1605 in a Cadillac?
- The code B1605 can be triggered by a faulty mirror motor, wiring issues, or a malfunctioning mirror control switch.
3. How can I diagnose the Mirror Motor Horizontal Circuit issue in my Cadillac?
- To diagnose the issue, you can perform a visual inspection of the mirror motor and wiring connections. Additionally, using a multimeter to test for continuity and voltage can help pinpoint the problem.
4. Can a DIY enthusiast repair the Mirror Motor Horizontal Circuit issue in a Cadillac?
- DIY repairs are possible if you have the necessary tools and knowledge. Replacing the mirror motor or fixing wiring faults are common repair tasks associated with this code.
5. Is it safe to drive my Cadillac with the OBDII code B1605 related to the Mirror Motor Horizontal Circuit?
- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functionality of the mirror adjustment feature.
6. How much does it typically cost to repair OBDII code B1605 in a Cadillac?
- The cost of repair can vary depending on the specific cause of the issue. Replacing a mirror motor or repairing wiring faults can cost anywhere from $100 to $300 or more, including parts and labor.
7. Are there any preventive measures to avoid encountering OBDII code B1605 in a Cadillac?
- Regularly inspecting the mirror adjustment system for any signs of wear or damage can help prevent issues related to the Mirror Motor Horizontal Circuit.
8. Can extreme weather conditions affect the Mirror Motor Horizontal Circuit in a Cadillac?
- Extreme temperatures or moisture can potentially damage the mirror motor or wiring, leading to issues with the Mirror Motor Horizontal Circuit.
9. Will resetting the OBDII system clear the B1605 code in a Cadillac?
- Resetting the OBDII system may clear the code temporarily, but if the underlying issue is not addressed, the code is likely to reappear.
10. How long does it take to repair the Mirror Motor Horizontal Circuit issue in a Cadillac?
- The repair time can vary depending on the specific cause of the problem and the expertise of the technician. On average, the repair can take anywhere from 1 to 3 hours.
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