Rain Sensor Module Internal
Table of contents
B221D RAM Possible Causes
- Faulty Light Rain Sensing Module (LRSM)
- Light Rain Sensing Module (LRSM) harness is open or shorted
- Light Rain Sensing Module (LRSM) circuit poor electrical connection
How do I fix code B221D 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 B221D RAM code
The cost of diagnosing the B221D 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)
B221D RAM Description
The Body Control Module (BCM) is the Local Interconnect Network (LIN) master for the Light Rain Sensing Module (LRSM). The LRSM performs an internal self test and sends the information to the BCM. The repair of this fault condition does not involve any external circuitry and centers on verifying the integrity of the internal circuitry and software validity. The Diagnostic Trouble Code (DTC) is set when the Light Rain Sensing Module (LRSM) detects an internal failure.