B2318 Mercury Code - Mirror Passenger Vertical Feedback Potentiometer Circuit Short To Battery
Quick Answer
Under normal operation, the exterior mirror control switch receives power and ground from the circuit. Common causes include Faulty Passenger Exterior Mirror, Passenger Exterior Mirror harness is open or shorted, Passenger Exterior Mirror 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
- B2318 Mercury indicates Mirror Passenger Vertical Feedback Potentiometer Circuit Short To Battery.
- Common causes
- Common causes include Faulty Passenger Exterior Mirror, Passenger Exterior Mirror harness is open or shorted, Passenger Exterior Mirror 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 B2318 Mercury Description
The memory mirror system uses feedback potentiometers, located in the LH and RH exterior mirrors, in order to track the movement of the LH and RH exterior mirror motors. The DDM supplies the LH and RH exterior mirror feedback potentiometer reference voltage and ground through circuits. The DDM receives feedback from the LH and RH exterior mirror feedback potentiometer through left/right and up/down circuits.
What are the Possible Causes of the DTC B2318 Mercury?
- Faulty Passenger Exterior Mirror
- Passenger Exterior Mirror harness is open or shorted
- Passenger Exterior Mirror circuit poor electrical connection
- Faulty Passenger Exterior Mirror Control Switch
- Faulty Driver Door Module (DDM)
- Faulty Driver Seat Module (DSM)
How to Fix the DTC B2318 Mercury?
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 B2318 Mercury 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 B2318 Mercury Code
What does the OBDII code B2318 mean for a Mercury vehicle?
The B2318 code indicates a problem with the passenger side mirror's vertical feedback potentiometer circuit, specifically a short to battery.
What are the common symptoms associated with the B2318 code?
Common symptoms may include the passenger side mirror not adjusting correctly, erratic mirror movement, or the mirror being stuck in one position.
What could cause the B2318 code to trigger?
The code can be triggered by a short circuit in the wiring, a faulty vertical feedback potentiometer, or issues with the mirror control module.
How can I diagnose the B2318 code?
To diagnose the code, inspect the wiring and connectors for damage, test the vertical feedback potentiometer with a multimeter, and check the mirror control module for faults.
What are potential repair options for the B2318 code?
Repair options may include repairing or replacing damaged wiring, replacing the vertical feedback potentiometer, or replacing the mirror control module if necessary.
Can I drive my vehicle safely with the B2318 code?
While it may be safe to drive, the lack of proper mirror adjustment can reduce visibility and increase the risk of accidents. It’s best to address the issue promptly.
Will clearing the code resolve the issue permanently?
Clearing the code may temporarily turn off the warning light, but if the underlying issue isn't fixed, the code will likely reappear.
How much does it typically cost to repair the B2318 code?
Repair costs can vary widely, but they typically range from $100 to $300, depending on whether it involves simple wiring repairs or replacing components.
Is this code specific to Mercury vehicles?
While B2318 is specific to Mercury vehicles, similar issues may occur in other brands that utilize comparable mirror adjustment systems.
Discuss the causes and fixes for B2318 Mercury OBDII Code
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