B1488: Right Front Door Handle Circuit Open
The B1488 code indicates that the Body Control Module (BCM) or the Door Control Module (DDM/PDM) has detected an open circuit in the signal or power circuit of the right front door handle. This prevents the module from sensing the door open request (exterior handle) or latch status, disabling keyless entry or power release from that side.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty right front door handle (internal sensor or microswitch open)
- Damaged, cut, or disconnected wiring in the harness between the hinge and door (flex area)
- Loose, corroded, or backed-out terminals at the door handle connector
- Internal failure of the Door Control Module (DDM) or BCM in the input circuit
3. Symptoms You Will Notice
- Keyless entry or power door release inoperative on the right front door
- Door ajar warning or incorrect door status displayed
4. Step-by-Step Diagnosis
Scan for related codes and verify B1488 is current
Inspect the door handle connector for corrosion, damage, or loose terminals
Check wiring harness in the door hinge area for breaks or chafing
Test the door handle switch/sensor continuity and resistance per service manual
If wiring and handle are good, suspect DDM or BCM fault
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, the vehicle remains drivable. However, the right front door may not unlock or open electronically, and the door status may not be monitored correctly.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the handle assembly, wiring repair, or module replacement is needed.