C1046
Left Front Wheel Pressure Phase Monitoring
C1046 is an OBD-II diagnostic trouble code meaning: Left Front Wheel Pressure Phase Monitoring. Common causes: malfunction of the pressure sensor in the left front wheel, damage to the wiring harness to the sensor. Estimated repair cost: $56–167.
Symptoms
- Tire pressure indicator is on
- Incorrect left front tire pressure readings
- TPMS system does not respond to pressure changes
Causes
- Malfunction of the pressure sensor in the left front wheel
- Damage to the wiring harness to the sensor
- Problems with the TPMS control module
- Sensor battery low
How to Fix
- Check the pressure in the left front wheel manually
- Diagnose a pressure sensor using an OBD-II scanner
- Check the integrity of the wiring harness
- Replace pressure sensor if necessary
- Reboot TPMS system after repair
Related codes
FAQ
What does the C1046 code mean?
C1046 is an OBD-II diagnostic trouble code that indicates: Left Front Wheel Pressure Phase Monitoring
What causes a C1046 error code?
The most common causes of C1046 include: Malfunction of the pressure sensor in the left front wheel; Damage to the wiring harness to the sensor; Problems with the TPMS control module; Sensor battery low.
How do I fix a C1046 diagnostic trouble code?
To fix C1046: Check the pressure in the left front wheel manually. Diagnose a pressure sensor using an OBD-II scanner. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1046?
Limited driving only, diagnose soon
How much does it cost to fix C1046?
The estimated repair cost for C1046 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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