B1295: Battery Power Relay Circuit Short to Ground
The B1295 code indicates a short to ground in the battery power relay circuit. This relay controls power distribution from the battery to specific modules, typically in access control, comfort, or security systems. The control module detects abnormal continuity to ground in the relay's control or power circuit, preventing proper operation or keeping the relay permanently de-energized. In Ford vehicles, this code is commonly associated with the Body Control Module (BCM), Remote Keyless Entry (RKE) system, or alarm modules. The short may originate in the wiring harness, connectors, or the relay itself, which may be integrated into a module.
1. Commonly Affected Makes
2. Most Common Causes
- Internal battery power relay in the module damaged or with welded contacts
- Relay control circuit wiring with damaged insulation contacting chassis ground
- Corroded or bent pins in the module connector
- Body Control Module (BCM) with internal relay driver failure
- Blown fuse in the related circuit with evidence of short circuit
3. Symptoms You Will Notice
- Inoperative power locks, windows, or interior lights
- Keyless entry or alarm system malfunction
- No crank or no start in some cases
- Battery drain or parasitic draw
4. Step-by-Step Diagnosis
Check for related fuses and replace if blown, then test for shorts
Inspect wiring and connectors for damage, corrosion, or bent pins
Test relay control circuit for continuity to ground with key off
Verify relay operation by swapping with a known good relay if accessible
If relay is internal to BCM, perform BCM self-test or replace module
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, but you may experience loss of convenience features like power locks or windows. The vehicle remains drivable, but address the issue promptly to avoid battery drain or further electrical problems.
How much does it cost to fix?▼
Repair costs range from $100 to $500, depending on the cause. Simple wiring repairs or fuse replacement can be under $150, while BCM replacement may cost $300–$500 including labor.