TPMS Antenna Circuit Malfunction
What does C0193 mean?
The C0193 code means the vehicle's onboard diagnostic system has detected: TPMS Antenna Circuit Malfunction. This is a low severity code.
Common Symptoms
- TPMS sensors intermittently not reporting
- Reduced TPMS reception range
- TPMS light on with all sensors showing fault
- Sensor signals only received at certain speeds
- TPMS antenna DTC stored in module
Probable Causes (Ranked by Likelihood)
- Damaged TPMS antenna Very High
- Corroded antenna connector High
- Antenna cable damaged or pinched Moderate
- TPMS module antenna input failure Low
Step-by-Step Diagnostic Procedure
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Scan TPMS module for antenna-specific DTCs
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Inspect TPMS antenna for physical damage
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Check antenna cable and connector
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Test antenna signal reception strength
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Verify antenna mounting and position
Frequently Asked Questions
Where is the TPMS antenna located?
The TPMS antenna may be a wire routed along the body or integrated into the rear window. Some vehicles have multiple antennas, one near each wheel arch, for better reception.
Can aftermarket tinting affect the TPMS antenna?
If the TPMS antenna is integrated into the rear window, metallic window tint can interfere with the signal. Non-metallic ceramic tints generally do not cause issues.
Is the TPMS antenna expensive to replace?
The antenna itself is usually inexpensive, but access can vary. If it is integrated into the window or behind trim panels, labor costs can add up depending on the vehicle.