B123B Mercury Code - Right Front Turn Indicator Circuit Short
Quick Answer
The Steering Column Control Module (SCCM) monitors the multifunction switch position. Common causes include Faulty Right Front Turn Indicator, Right Front Turn Indicator harness is open or shorted, Right Front Turn Indicator 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
- B123B Mercury indicates Right Front Turn Indicator Circuit Short.
- Common causes
- Common causes include Faulty Right Front Turn Indicator, Right Front Turn Indicator harness is open or shorted, Right Front Turn Indicator 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.
Code B123B Mercury Description
The timed on/off cycle for turn lamps is determined by the BCM and is set to flash approximately 80 times per minute if both the front and rear turn signal lamps operate correctly. If an individual turn signal lamp is inoperative, the BCM fast flashes the remaining turn lamp approximately 160 times per minute to indicate a bulb outage to the driver. The OBDII sets when the BCM detects the front, rear or exterior mirror turn lamp output is not to factory specifications.
What are the Possible Causes of the DTC B123B Mercury?
- Faulty Right Front Turn Indicator
- Right Front Turn Indicator harness is open or shorted
- Right Front Turn Indicator circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B123B 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.
Code Tech Notes
B123B:15 Right Front Turn Indicator Circuit Short To Battery or Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B123B 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 B123B Mercury Code
1. What are the common symptoms of OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
The common symptoms include the right front turn indicator not functioning properly or not working at all, fast blinking of the turn signal, or an indicator on the dashboard indicating a malfunction.
2. What are the possible causes of OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
The possible causes include a short circuit in the wiring connected to the right front turn indicator, a faulty turn signal bulb, a damaged turn signal socket, or a problem with the turn signal switch.
3. How can I diagnose OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
Diagnosing this code typically involves visually inspecting the wiring and connections related to the right front turn indicator, checking the condition of the turn signal bulb, and using a multimeter to test for continuity and shorts in the circuit.
4. What are some repair tips for fixing OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
Repair tips may include replacing the faulty turn signal bulb, repairing any damaged wiring or connections, cleaning or replacing the turn signal socket, and ensuring proper grounding of the circuit.
5. Can OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short) be reset without repairs?
Resetting the code without fixing the underlying issue may temporarily turn off the warning light, but the problem will persist and the code is likely to reappear once the system detects the fault again.
6. Is it possible to drive with OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short) present?
While it may be possible to drive with this code present, it is not recommended as it can affect the visibility of your vehicle to other drivers, potentially leading to safety hazards on the road.
7. How much does it typically cost to repair OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from a simple bulb replacement to more extensive repairs involving wiring or component replacement. Costs can range from $50 to $200 or more.
8. Can a DIY enthusiast fix OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
Yes, depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this code by following step-by-step guides or tutorials available online or in repair manuals.
9. How urgent is it to address OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short)?
While not an emergency, it is recommended to address this code promptly to ensure the proper functioning of the right front turn indicator and maintain overall safety on the road.
10. Will OBDII code B123B Mercury (Right Front Turn Indicator Circuit Short) cause my vehicle to fail an emissions test?
This specific code is related to the turn signal circuit and is unlikely to cause your vehicle to fail an emissions test. However, it is still important to address and resolve the issue for safety and operational reasons.
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