B21DD

System Voltage-Signal Below Allowable Range

NHTSA 10212493 ↗ NHTSA 10212494 ↗ NHTSA 10221346 ↗

System Voltage-Signal Above Allowable Range

NHTSA 10231795 ↗ NHTSA 10231796 ↗ NHTSA 10231797 ↗

System Voltage-signal Below Allowable Range

NHTSA 11024293 ↗ NHTSA 11024303 ↗

JEEP

If the Power Liftgate (PLG) does not operate following battery drainage or when DTCs B2199-16 or B21DD-16 are active, perform the following steps: 1. Verify Battery Voltage: Ensure battery voltage is at nominal value (minimum 12.5 V). Charge the battery, if necessary before proceeding. 2. Confirm Low Voltage DTCs: After charging…

RAM

Unable To Start Vehicle - Shifter Inoperable Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B2199-16 - Battery Voltage-circuit Voltage Below Threshold. ● B21DD-84 - System Voltage-signal Below Allowable Ran…

RAM

Unable To Start Vehicle - Shifter Inoperable Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B2199-16 - Battery Voltage-circuit Voltage Below Threshold. ● B21DD-84 - System Voltage-signal Below Allowable Ran…

JEEP

Flash: Radio Frequency Hub Module (RFHM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTCs) have been set: ? B21DD-84 - System Voltage-Signal Below Allowable Range. ? B21DD-85 - System Vol…