C0046
Left Rear Wheel Speed Signal Erratic
2004-2004 Buick Century 3.1L V6
Moderate SeverityChassisGeneric (SAE)
The 2004 Buick Century is equipped with a 3.1L V6 engine. Below you'll find detailed c0046 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Erratic signal from left rear sensor.
Symptoms
- ABS light on
- Unexpected ABS activation
Common Causes
- Tone ring crack
- Debris
- Bearing wear
Diagnostic Steps
- Scope signal
- Inspect tone ring
- Check bearing
Repair Notes
Replace sensor or tone ring.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0046 on Other Vehicles
Common Questions
What does code C0046 mean on a 2004-2004 Buick Century?
C0046 stands for "Left Rear Wheel Speed Signal Erratic". Erratic signal from left rear sensor.
What are the symptoms of C0046 on a Buick Century?
Common symptoms of C0046 include: ABS light on, Unexpected ABS activation.
What causes C0046 on a 2004-2004 Buick Century?
Common causes of C0046 include: Tone ring crack, Debris, Bearing wear.
Last updated: March 2026