What Does C1176 Mean?
The left rear wheel speed sensor circuit is open, meaning there is a complete break in the electrical path between the sensor and the ABS module. The ABS module receives no signal at all from the left rear wheel. The ABS, traction control, and stability control systems will be disabled, and the corresponding warning lights will be illuminated on the dash.
Safety Warning
ABS and traction control are fully disabled. Conventional braking still works, but there is no anti-lock protection, meaning wheels may lock during hard braking, especially on wet or icy roads. Drive conservatively to a repair facility.
Common Causes
35%
Broken wire in the LR wheel speed sensor harness, often due to flexing near the suspension
25%
Disconnected or corroded connector at the LR wheel speed sensor
25%
Failed LR wheel speed sensor with internal open coil
15%
Open circuit at the ABS module connector due to a pushed-back or damaged pin
Diagnostic Steps
1
Locate the LR wheel speed sensor connector (typically near the wheel well or along the frame rail). Verify the connector is fully seated and locked. Inspect for corrosion or green deposits.
2
Disconnect the sensor connector and measure resistance across the sensor pins. For a passive (VR) sensor, expect 800-2000 ohms. An OL (infinite) reading confirms the sensor coil is open — replace the sensor.
3
If sensor resistance is within spec, measure continuity from each sensor connector pin through to the corresponding ABS module connector pin. An OL reading on either wire indicates a harness open — trace and repair.
4
Carefully inspect the harness routing from the sensor up through the wheel well and along the body. Flex the wiring gently at stress points (where it crosses moving suspension parts) while monitoring continuity for intermittent opens.
5
Check the ABS module connector pins for the LR sensor circuit — push gently on each pin to verify it is fully seated and makes good contact.
Estimated Repair Cost
$50 - $350
Parts + labor, varies by vehicle and location
The left rear wheel speed sensor circuit is open, meaning there is a complete break in the electrical path between the sensor and the ABS module. The ABS module receives no signal at all from the left rear wheel. The ABS, traction control, and stability control systems will be disabled, and the corr...
The most common cause of C1176 (Speed Wheel Sensor LR Circuit Open) is: Broken wire in the LR wheel speed sensor harness, often due to flexing near the suspension
Typical repair costs for C1176 range from $50 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
ABS and traction control are fully disabled. Conventional braking still works, but there is no anti-lock protection, meaning wheels may lock during hard braking, especially on wet or icy roads. Drive conservatively to a repair facility.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1176 to identify the root cause.
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Quick Info
Category
Chassis
System
ABS / Traction Control
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