System Voltage Signal
Table of contents
B21DD JEEP Possible Causes
- Vehicle Charging System
- Faulty Heated Seat Module (HSM)
- Faulty Totally Integrated Power Module (TIPM)
- Faulty Tire Pressure Monitoring (TPM) Module
- Faulty Blind Spot Module (BSM)
How do I fix code B21DD JEEP?
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.
Tech Notes
- B21DD-84 SYSTEM VOLTAGE SIGNAL BELOW ALLOWABLE RANGE
- B21DD-85 SYSTEM VOLTAGE SIGNAL ABOVE ALLOWABLE RANGE
Cost of diagnosing the B21DD JEEP code
The cost of diagnosing the B21DD JEEP 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)
B21DD JEEP Description
When the Heated Seat Module (HSM), the Totally Integrated Power Module (TIPM), the Tire Pressure Monitoring (TPM) Module or the Blind Spot Module (BSM) sends a message that the system voltage is below 8.0 volts or above 16.0 volts for over 20ms, this code will set.