OBD-II code · Chassis
C0034 Left Front Wheel Speed Sensor No Signal
No pulses are received from the left front wheel speed sensor while other wheels report motion. The fault disables ABS and stability control.
Is it safe to drive with C0034?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor internally failed
- PossibleWiring open at suspension flex
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Wheel Speed Sensor Fl, Sensor Wiring, Tone Ring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.