B2558

What does B2558 mean?

B-code B2558 means "Right Power Sliding Door Open/Close Output Circuit Short to Battery". It is a generic OBD-II diagnostic trouble code (DTC) in the body electronics. The circuit has a short to battery voltage, meaning an unintended connection to the positive supply rail exists in the right power sliding door open/close output circuit short to battery wiring. This warning should be addressed within the next few days to avoid further damage. This code applies to OBD-II compliant electric and hybrid vehicles.

Possible Causes

• Chafed or pinched wire making contact with a positive voltage supply
• Water or moisture intrusion into the connector causing a voltage leak
• Faulty module or sensor internally shorted to battery
• Incorrectly installed aftermarket accessory creating a voltage path

Recommended Actions

1. 1 Avoid aggressive driving and schedule a diagnostic appointment within the next 1–3 days
2. 2 Scan for all DTCs with an OBD-II scanner — note any related codes stored alongside B2558
3. 3 Inspect wiring harness for chafed insulation, pinched wires, or contact with metal surfaces
4. 4 Measure voltage/resistance at the connector with the harness disconnected to locate the short
5. 5 Clear the DTC, road-test the vehicle, and re-scan to confirm whether the fault returns
6. 6 If the fault persists after inspection and clearing, consult an EV-certified technician for component replacement

Related Body fault codes