C0038 on 2000-2001 Volkswagen Jetta — Left Rear Wheel Speed Sensor Circuit
1 vehicles · 1 makes · $150-$1,200 repair
Most Reported On
C0038 is an OBD-II diagnostic trouble code meaning “Left Rear Wheel Speed Sensor Circuit.” C0038 is a chassis/brake code indicating a fault in the left rear wheel speed sensor circuit (often specifically the sensor's supply/voltage portion of the circuit). The ABS module needs this sensor's signal for anti-lock braking, traction control, and stability control, and sets the code when the circuit is open, shorted, or out of range. The ABS and stability/traction lights usually illuminate and those systems may be disabled, while ordinary braking typically continues to function. This code is most commonly reported on 2000-2001 Volkswagen Jetta, with repair costs ranging from $150 to $1,200.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C0038, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does C0038 mean?
C0038 stands for "Left Rear Wheel Speed Sensor Circuit." C0038 is a chassis/brake code indicating a fault in the left rear wheel speed sensor circuit (often specifically the sensor's supply/voltage portion of the circuit). The ABS module needs this sensor's signal for anti-lock braking, traction control, and stability control, and sets the code when the circuit is open, shorted, or out of range. The ABS and stability/traction lights usually illuminate and those systems may be disabled, while ordinary braking typically continues to function.
What are the most common causes of C0038?
The most common causes of C0038 are: Failed left rear wheel speed sensor, Damaged supply/signal wiring or chafed harness, Corroded or loose sensor connector, Damaged or contaminated tone/reluctor ring, Blown fuse or open in the sensor supply circuit, ABS control module fault. The specific cause varies by vehicle.
How much does it cost to fix C0038?
Repair costs for C0038 range from $150 to $1,200, depending on the vehicle and root cause.
Which vehicles are affected by C0038?
Au7o has documented C0038 across 1 vehicle models from 1 manufacturers: Volkswagen.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.