Tire Pressure Monitoring System Left Rear Sensor Fault
What does C0190 mean?
The C0190 code means the vehicle's onboard diagnostic system has detected: Tire Pressure Monitoring System Left Rear Sensor Fault. This is a low severity code.
Common Symptoms
- TPMS light on dashboard
- Left rear pressure reading missing
- TPMS system fault indicator active
- Left rear shows dashes on tire info display
- TPMS warning after tire rotation
Probable Causes (Ranked by Likelihood)
- Dead left rear TPMS sensor battery Very High
- Sensor damage from pothole or curb impact High
- Sensor not relearned to correct position Moderate
- TPMS module reception error for left rear Low
Step-by-Step Diagnostic Procedure
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Activate left rear TPMS sensor with tool
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Check sensor transmission and battery status
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Verify correct sensor assignment after rotation
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Attempt relearn procedure for all four positions
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Inspect sensor for physical damage
Frequently Asked Questions
Why did my TPMS light come on after tire rotation?
After a tire rotation, the TPMS sensors are in different positions. Many vehicles require a relearn procedure to update which sensor corresponds to which wheel position.
Can a tire patch or plug damage the TPMS sensor?
Not typically, as the sensor is mounted on the rim away from where patches and plugs are applied. However, careless tire dismounting during repair can damage the sensor.
How much does a TPMS sensor cost?
TPMS sensors typically cost $30 to $80 each for OEM parts, plus installation labor which requires dismounting and remounting the tire. Some shops charge $15 to $30 for sensor programming.