B1867
Serious Severity (Level 4)Battery Power Supply ECU Circuit Short To Ground
B1867 usually means battery Power Supply ECU Circuit Short To Ground.
Can you still drive with B1867?
⚠️Limited driving — get to a repair shop within 1–2 days. Avoid long trips and highway speeds.
Typical repair cost: $180 – $2400
Severity Level 4 — Serious
This code indicates a serious issue that can cause noticeable driveability problems and potential engine damage if not addressed. The vehicle should be taken to a mechanic as soon as possible. Extended driving is not recommended.
Common Symptoms
- Engine control not working or completely dead
- Check Engine Light illuminated
- Engine control blowing fuses when activated
- Zero voltage on the engine/body control module circuit — short pulls signal to ground
Possible Causes
- Chafed or pinched wire in the engine/body control module circuit — wire insulation worn through, copper touching vehicle chassis/ground
- Failed control module with internal short to ground — most common when the component gets wet or overheats
- Corrosion in the electrical connector allowing current to leak to the connector shell/ground
- Damaged wiring harness where it passes through a body panel grommet or near a sharp metal edge
Common Fixes
- Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($27-136 at shop, free at auto parts store for basic scan)
- Visually inspect the engine/body control module wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $113 diagnostic fee at shop)
- Repair or replace damaged section of wiring harness where short is located — solder and heat-shrink all connections, don't use crimp connectors on critical circuits ($160-497 depending on accessibility)
- If control module is internally shorted, replace with a quality OEM or OEM-equivalent aftermarket unit ($150-2000)
- Clean all ground points related to the engine/body control module — remove bolt, sand contact surface to bare metal, apply dielectric grease, and torque to spec ($45-100 at shop)
Estimated Repair Cost
These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.
Frequently Asked Questions
What does B1867 mean?
B1867 stands for "Battery Power Supply ECU Circuit Short To Ground". B1867 usually means battery Power Supply ECU Circuit Short To Ground.
Can you drive with B1867?
Limited driving — get to a repair shop within 1–2 days. Avoid long trips and highway speeds.
How much does it cost to fix B1867?
Repair costs for B1867 typically range from $180 to $2400, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($27-136 at shop, free at auto parts store for basic scan); Visually inspect the engine/body control module wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $113 diagnostic fee at shop); Repair or replace damaged section of wiring harness where short is located — solder and heat-shrink all connections, don't use crimp connectors on critical circuits ($160-497 depending on accessibility).
Will B1867 clear itself?
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