C116A Mercury Code - ABS Pressure Transducer/Brake Switch Mismatch
Quick Answer
The pressure transducer is integral to the Hydraulic Control Unit (HCU). Common causes include Faulty Hydraulic Control Unit (HCU), Hydraulic Control Unit (HCU) harness is open or shorted, Hydraulic Control Unit (HCU) 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
- C116A Mercury indicates ABS Pressure Transducer/Brake Switch Mismatch.
- Common causes
- Common causes include Faulty Hydraulic Control Unit (HCU), Hydraulic Control Unit (HCU) harness is open or shorted, Hydraulic Control Unit (HCU) 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 C116A Mercury Description
When the brake pedal is pressed, the stop lamp switch closes and a voltage is sent to the Powertrain Control Module (PCM). The PCM then sends a message over the High-Speed Controller Area Network (HS-CAN) to the ABS module indicating that the brake pedal has been pressed. DTCs set in the ignition cycle can only be cleared by cycling the ignition off and on once the fault has been corrected.
This DTC sets in every ignition cycle if during normal operation, the stop lamp switch message does not match the HCU transducer, both signals have to agree about whether the brakes are being applied or not.
What are the Possible Causes of the DTC C116A Mercury?
- Faulty Hydraulic Control Unit (HCU)
- Hydraulic Control Unit (HCU) harness is open or shorted
- Hydraulic Control Unit (HCU) circuit poor electrical connection
How to Fix the DTC C116A 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 C116A 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 C116A Mercury Code
1. What are the common symptoms of OBDII code C116A in a Mercury vehicle?
- Common symptoms include the ABS warning light being illuminated on the dashboard, issues with the ABS system functionality, and potential brake performance issues.
2. What does the OBDII code C116A Mercury ABS Pressure Transducer/Brake Switch Mismatch indicate?
- The code indicates a discrepancy between the pressure transducer and brake switch signals in the ABS system, potentially leading to malfunction.
3. What are the possible causes of OBDII code C116A in a Mercury vehicle?
- The code can be triggered by issues such as a faulty pressure transducer, a malfunctioning brake switch, wiring problems, or a communication error within the ABS system.
4. How can I diagnose the OBDII code C116A in my Mercury vehicle?
- Diagnosing the code typically involves using a professional OBDII scanner to retrieve the specific error code, inspecting the pressure transducer and brake switch for faults, and checking the ABS system wiring for any issues.
5. Is it safe to drive with the OBDII code C116A present in my Mercury vehicle?
- It is not recommended to drive with the code active, as it may affect the proper functioning of the ABS system and potentially compromise braking performance.
6. Can I repair OBDII code C116A in my Mercury vehicle myself?
- While simple tasks like checking for loose connections or damaged wiring can be done by DIY enthusiasts, diagnosing and repairing the ABS Pressure Transducer/Brake Switch Mismatch issue may require professional expertise and specialized tools.
7. How much does it typically cost to repair OBDII code C116A in a Mercury vehicle?
- Repair costs can vary depending on the specific underlying issue causing the code. It is advisable to consult a mechanic for a proper diagnosis and cost estimate.
8. Are there any preventative measures to avoid triggering OBDII code C116A in my Mercury vehicle?
- Regular maintenance of the ABS system, including checking the condition of the pressure transducer and brake switch, can help prevent issues that may lead to the code being triggered.
9. Can resetting the OBDII system clear the C116A code in my Mercury vehicle?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the ABS Pressure Transducer/Brake Switch Mismatch is not addressed, the code is likely to reappear.
10. Is the OBDII code C116A specific to Mercury vehicles, or can it occur in other car makes and models?
- While the code is associated with Mercury vehicles, similar ABS system mismatch issues can occur in other car makes and models, triggering their respective error codes.
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