Ignition Run Control Circuit Low
Table of contents
B2122 RAM Possible Causes
- Faulty Run Relay
- Run Relay harness is open or shorted
- Run Relay circuit poor electrical connection
- Faulty Front Control Module (FCM)
How do I fix code B2122 RAM?
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 B2122 RAM code
The cost of diagnosing the B2122 RAM 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)
B2122 RAM Description
The Front Control Module monitors the Ignition Run Control Circuit. The Front Control Module will set this Diagnostic Trouble Code (DTC) within 500ms if the Run Relay Control Circuit voltage is open or shorted to ground.