B1D27 RAM Code - Mirror Motor Common Control Circuit Low
Quick Answer
When the Memory Mirror Module senses a value below the tolerance of the mirror motor on the Mirror Motor Common Control circuit for over 10ms, this Diagnostic Trouble Code (DTC) will set. Common causes include Faulty Mirror Motor, Mirror Motor harness is open or shorted, 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
- B1D27 RAM indicates Mirror Motor Common Control Circuit Low.
- Common causes
- Common causes include Faulty Mirror Motor, Mirror Motor harness is open or shorted, 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 B1D27 RAM Description
What are the Possible Causes of the DTC B1D27 RAM?
- Faulty Mirror Motor
- Mirror Motor harness is open or shorted
- Mirror Motor circuit poor electrical connection
- Faulty Memory Mirror Module
How to Fix the DTC B1D27 RAM?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1D27 RAM 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 B1D27 RAM Code
1. What does the OBDII code B1D27 mean for a RAM vehicle?
The code B1D27 indicates a "Mirror Motor Common Control Circuit Low," meaning there’s an issue with the electrical circuit controlling the power mirror motor.
2. What are the common symptoms of code B1D27 in a RAM?
Symptoms include unresponsive or malfunctioning power mirrors, mirrors that only move in certain directions, or no movement at all.
3. What causes the B1D27 code to trigger?
Common causes include a faulty mirror motor, damaged or corroded wiring, a bad mirror control switch, or an issue with the vehicle’s Body Control Module (BCM).
4. Can a blown fuse cause the B1D27 code?
Yes, a blown fuse in the mirror control circuit can lead to this code, as it interrupts the power supply to the system.
5. How do you diagnose the B1D27 code?
Start by inspecting the wiring and connectors for damage or corrosion, check the fuse for the mirror control circuit, and test the mirror motor and switch for proper function.
6. Is it safe to drive with the B1D27 code active?
Yes, the vehicle is safe to drive, but the power mirror functionality may be compromised, which could affect visibility adjustments.
7. How can you fix the B1D27 code on a RAM?
Repairs may involve replacing a damaged mirror motor, repairing or replacing faulty wiring, replacing the mirror control switch, or reprogramming the BCM if necessary.
8. What tools are needed to troubleshoot the B1D27 code?
You’ll need a diagnostic scanner, a multimeter to test electrical circuits, and basic tools for accessing the mirror assembly and wiring.
9. Can the B1D27 code clear itself?
No, the code will not clear itself. The underlying issue must be resolved, and the code may need to be cleared with a diagnostic scanner.
10. How much does it cost to fix a B1D27 code?
The repair cost can vary widely, ranging from $50 for a simple wiring fix to $300 or more if the mirror motor or control switch requires replacement.
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