Ignition Run/Acc/Pad Control Circuit Open
Table of contents
B2120 RAM Possible Causes
- Faulty Accessory Delay Relay
- Accessory Delay Relay harness is open or shorted
- Accessory Delay Relay circuit poor electrical connection
- Faulty Front Control Module (FCM)
How do I fix code B2120 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 B2120 RAM code
The cost of diagnosing the B2120 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)
B2120 RAM Description
The Front Control Module monitors the Ignition Run/ACC/Pad Control Circuit. The Front Control Module will set this Diagnostic Trouble Code (DTC) within 500ms if the Ignition Accessory Delay Relay Control circuit is open.