Left Rear Wheel Speed Sensor Circuit High
The C0047 code means the vehicle's onboard diagnostic system has detected: Left Rear Wheel Speed Sensor Circuit High. This is a critical severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $100 - $400 (parts and labor)
Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- ABS warning light on
- Left Rear speed reads abnormally high on scan tool
- Traction control erratic
- ABS activates unexpectedly
Probable Causes (Ranked by Likelihood)
- Shorted left rear wheel speed sensor Very High
- Sensor wiring shorted to voltage source High
- Electromagnetic interference near sensor Moderate
- ABS module input circuit fault Low
Step-by-Step Diagnostic Procedure
-
Measure left rear sensor output voltage range
-
Check sensor wiring for shorts to power
-
Inspect wiring routing near ignition components
-
Compare sensor readings across all wheels
Frequently Asked Questions
What does code C0047 mean?
C0047 indicates a problem with the left rear wheel speed sensor circuit causing high signal output.
Can I drive with code C0047?
You can drive short distances, but ABS and traction control will be disabled. Avoid slippery roads.
How much does it cost to fix C0047?
Wheel speed sensor repairs typically cost $100 to $400 including parts and labor.
Sources
This page is built from documented references. Verify against your own service info before repair work.
Explore More
Was this helpful?
Share carcodefinder.com with a friend who needs to decode their check engine light.