C1011 on 2008-2017 Volkswagen Scirocco — Left Front Wheel Speed Sensor Signal Erratic Performance
1 vehicles · 1 makes · $80-$500 repair
How to diagnose and fix C1011: 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.
Volkswagen Scirocco · 2008–2017
Many owners report intermittent illumination of the ABS, ESP/traction-control and handbrake warning lights, often with an audible beep, that may clear on an ignition cycle. The frequent root cause is the ABS/ESP control unit itself: heat in the engine bay can crack solder joints on its circuit board (VW recalled MY2009 Scirocco units in Japan for this, campaign GAI-2599); a faulty wheel-speed sensor or damaged wiring can give similar warnings. Because it is intermittent and electrical, swapping individual sensors often does not fix it without proper fault-code reading.
Common Symptoms
- ABS warning light
- ESP / traction-control light
- Handbrake/brake warning light flashing with beep
- Lights clear after ignition cycle
- Speedometer dropout in some cases
How to Fix
Scan with VAG diagnostics to read the stored ABS/ESP code first. Check with a VW dealer whether an ABS control-unit recall/campaign applies to the VIN; otherwise have the ABS control unit repaired or replaced if it is confirmed faulty, and replace the offending wheel-speed sensor or repair wiring only where the codes point to it.
Sources for this issue (3)
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C1011 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 C1011 mean?
C1011 stands for "Left Front Wheel Speed Sensor Signal Erratic Performance." C1011 is a chassis/manufacturer-specific ("C") trouble code most commonly defined (on Chrysler, Dodge, and Jeep) as erratic or out-of-range signal from the left front wheel speed sensor used by the ABS/traction-control system. It sets when the ABS module detects implausible acceleration/deceleration patterns or a faulty signal from that sensor, which can disable ABS, traction control, and stability control. Note that on some other makes (e.g., Mercedes-Benz) the same code number refers instead to an ASR/ETS/ESP hydraulic-unit power-supply circuit fault, so confirm against the specific vehicle.
What are the most common causes of C1011?
The most common causes of C1011 are: Faulty or failing left front wheel speed sensor, Damaged, corroded, or loose sensor wiring/connector (open or short in signal or supply line), Excessive air gap between the sensor and the tone/reluctor ring, Damaged, contaminated, or missing teeth on the tone (reluctor) ring, Worn or loose front wheel bearing/hub causing erratic readings, Defective ABS/traction-control control module. The specific cause varies by vehicle.
How much does it cost to fix C1011?
Repair costs for C1011 range from $80 to $500, depending on the vehicle and root cause.
Which vehicles are affected by C1011?
Au7o has documented C1011 across 1 vehicle models from 1 manufacturers: Volkswagen.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.