Ignition Stuck in Start
Table of contents
B2A20 MERCURY Possible Causes
- Faulty Smart Junction Box (SJB)
- Smart Junction Box (SJB) harness is open or shorted
- Smart Junction Box (SJB) circuit poor electrical connection
- Faulty Instrument Cluster (IC)
How do I fix code B2A20 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 B2A20 MERCURY code
The cost of diagnosing the B2A20 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)
B2A20 MERCURY Description
The Instrument Cluster (IC) receives both the RUN/START and keep alive voltage from the Smart Junction Box (SJB). The Diagnostic Trouble Code (DTC) sets in the IC if the ignition START message sent from the SJB is stuck in the START position for greater than 15 seconds.