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C1939 Mercury Code - Brake Pressure Switch Input Circuit Failure

- Code Popularity: 613 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1939 Mercury?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Brake Pressure Switch (BPS)
  • Brake Pressure Switch (BPS) harness is open or shorted
  • Brake Pressure Switch (BPS) circuit poor electrical connection
⚠ Does your Mercury have Safety Recalls? → Check here

How to Fix the DTC C1939 Mercury?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1939 Mercury code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

Code C1939 Mercury Description

The Anti-Lock Brake System (ABS) Module monitors the Brake Pressure Switch (BPS). The ABS Module sets the OBDII code when the Brake Pressure Switch is not to factory specifications.

OBDII Code C1939 Mercury - Brake Pressure Switch Input Circuit Failure - AutoCodes.com
C1939 Mercury Code - Brake Pressure Switch Input Circuit Failure

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Code C1939 Mercury comments

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