C0267: How to Diagnose & Fix — ABS Pump Motor Circuit Open
2 vehicles · 2 makes · $300-$1,200 repair
How to diagnose and fix C0267: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Cadillac Eldorado · 1992–2002
The Teves Mark IV ABS modulator assembly develops internal leaks and electronic failures, disabling ABS and traction control. The modulator is expensive and integrates the hydraulic pump, valves, and electronic controller into one unit. Moisture intrusion into the electrical connector accelerates failure.
Common Symptoms
- ABS light on
- Traction control disabled message
- Brake pedal drops under ABS activation
- ABS motor runs continuously for short periods
How to Fix
The ABS modulator can be sent to a specialty rebuilder for significantly less than dealer replacement cost. Apply dielectric grease to all electrical connectors during reinstallation. Bleed the ABS system using a scan tool to cycle the pump and valves. Inspect the wheel speed sensors and tone rings during the repair.
Sources for this issue (1)
Chevrolet Monte Carlo · 2000–2007
The Electronic Brake Control Module (EBCM) mounted on the ABS hydraulic unit is prone to failure due to internal solder joint cracking from vibration and thermal cycling. When it fails, ABS, traction control, and stability control all stop functioning. The brake warning light, ABS light, and traction control light all illuminate.
Common Symptoms
- ABS light on
- Traction control light on
- Service stability system message
- Loss of ABS function
- Brake pedal pulsation during normal braking
How to Fix
The EBCM can be sent to a rebuilder for solder repair and reprogramming, which is more affordable than dealer replacement. Alternatively, replace the ABS modulator assembly. After replacement, the module must be programmed to the vehicle VIN. Bleeding the ABS system requires a scan tool to cycle the pump and valves.
Sources for this issue (1)
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C0267 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C0267 mean?
C0267 stands for "ABS Pump Motor Circuit Open." C0267 is a chassis/brake code (predominantly GM) meaning the electronic brake control module commanded the ABS pump motor on but detected no electrical feedback, indicating an open pump motor circuit. The pump rapidly modulates brake pressure during ABS events, so an open circuit prevents it from operating and disables ABS function, though normal base braking remains. It is frequently caused by wiring/connection problems or an internal module fault and should be repaired to restore anti-lock braking.
What are the most common causes of C0267?
The most common causes of C0267 are: Poor power or ground connection at the EBCM/pump connector, Open or corroded wiring in the pump motor harness, Faulty ABS pump motor, Internal EBCM/ABS module fault, Blown ABS pump fuse or faulty relay, Damaged 2-way motor harness terminals. The specific cause varies by vehicle.
How much does it cost to fix C0267?
Repair costs for C0267 range from $300 to $1,200, depending on the vehicle and root cause.
Which vehicles are affected by C0267?
Au7o has documented C0267 across 2 vehicle models from 2 manufacturers: Cadillac, Chevrolet.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.