Brake System Control Module Forced Engine Running
Table of contents
P1A1B MERCURY Possible Causes
- Intake air system leak
- Positive crankcase ventilation (PCV) system
- Vacuum leak
- Vacuum pump
- Vacuum pump circuit
How do I fix code P1A1B MERCURY?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1A1B MERCURY code
The cost of diagnosing the P1A1B MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1A1B MERCURY Description
The Anti-Lock Brake System (ABS) Module monitors for vacuum leaks. This Diagnostic Trouble Code (DTC) will set if the Anti-Lock Brake System Module detects a vacuum leak and requested the engine on.