C1100: ABS Pump Switch Circuit Failure - Generic
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA complaint patterns, then kept at generic code level because this page is not scoped to one make or model.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for C1100.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What Does C1100 Mean?
C1100 code: ABS Pump Switch Circuit Failure - Generic. Symptoms, likely causes, diagnostic path, severity, and repair cost context.
Symptoms of C1100
- ⚠️ Warning light or diagnostic trouble code is stored
- ⚠️ Symptoms vary by vehicle and by the system that set the code
- ⚠️ Related codes, freeze-frame data, and live data are needed before replacing parts
- ⚠️ Vehicle may fail an emissions or safety inspection until the code is resolved and monitors reset
Common Causes
- 🔍 Circuit, sensor, actuator, wiring, connector, module, or mechanical condition detected by the relevant control module
- 🔍 Low battery voltage, poor ground, corrosion, water intrusion, or intermittent connector contact
- 🔍 Vehicle-specific calibration or service bulletin condition that must be checked by VIN
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"TOWARDS THE END OF 2013 MY WIFE AND I STARTED NOTICING THE STEERING BEING REALLY DIFFICULT AND LOCKING UP ON SOME OCCASIONS PULLING INTO PARKING SPACES AND PARALLEL PARKING. WE EXPERIENCED SOME NEAR MISSES WHERE THE STEERING LOCKED AND FELT LIKE WE WERE GOING TO COLLIDE WITH THE VEHICLE IN THE NEXT"
— Chevrolet Traverse owner, 2013-12-09
Source: NHTSA Complaints Database
Most Reported Vehicles for C1100
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | CHEVROLET TRAVERSE |
Frequently Asked Questions
Is C1100 enough to replace a part?
Can I drive with C1100?
What To Do Next
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.