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DTC C0750, C0755, C0760, or C0765

DTC C0750, C0755, C0760, or C0765

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category.


DTC Descriptor

DTC C0750 03

Left Front Tire Pressure Sensor Low Voltage

DTC C0750 29

Left Front Tire Pressure Sensor Too Few Pulses

DTC C0750 39

Left Front Tire Pressure Sensor Internal Malfunction

DTC C0755 03

Right Front Tire Pressure Sensor Low Voltage

DTC C0755 29

Right Front Tire Pressure Sensor Too Few Pulses

DTC C0755 39

Right Front Tire Pressure Sensor Internal Malfunction

DTC C0760 03

Left Rear Tire Pressure Sensor Low Voltage

DTC C0760 29

Left Rear Tire Pressure Sensor Too Few Pulses

DTC C0760 39

Left Rear Tire Pressure Sensor Internal Malfunction

DTC C0765 03

Right Rear Tire Pressure Sensor Low Voltage

DTC C0765 29

Right Rear Tire Pressure Sensor Too Few Pulses

DTC C0765 39

Right Rear Tire Pressure Sensor Internal Malfunction

Circuit/System Description

The tire pressure monitor system has a radio frequency transmitting pressure sensor in each wheel/tire assembly. As vehicle speed increases, centrifugal force closes the sensors internal roll switch, which puts the sensor into rolling mode. The remote control door lock receiver receives and sends the data to the body control module (BCM). The BCM translates the data contained in the tire pressure sensor radio frequency transmissions into sensor presence, sensor mode, and tire pressure. Once vehicle speed is greater than 40 km/h (25 MPH), the remote function receiver module waits for the sensors to go into rolling mode. If one or more sensors do not go into rolling mode, or do not transmit at all, the BCM will set DTC C0750, C0755, C0760, or C0765 respectively.

Conditions for Running the DTC

The vehicle speed is greater than 40 km/h (25 mph).

Conditions for Setting the DTC


• A sensor does not transmit or transmits invalid data.

• A sensor low battery condition.


Action Taken When the DTC Sets


• The tire pressure monitor system indicator icon on the instrument cluster flashes for 1 min. and then remains illuminated after the ignition switch is cycled ON and the instrument cluster bulb check is complete.

• If equipped, the driver information center will also display a service tire monitor type message.


Conditions for Clearing the DTC

A current DTC will clear when the malfunction is no longer present and 1 ignition cycle occurs.

Diagnostic Aids


• Aftermarket wheel valve system locations can cause a sensor to not function correctly.

• A sensor may have been damaged due to a previous wheel/tire service or flat tire event.

• Occasionally sensor transmissions are not received by the remote function receiver module due to vehicle level radio frequency interference from items such as but not limited to aftermarket ignition systems, DVD players, CB radios, or metallic type window tinting.


Reference Information

Schematic Reference

Tire Pressure Monitoring System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Tire Pressure Monitor Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Drive over 20 km/h (12 MPH) for 9 min. Observe the scan tool tire pressures sensor pressure parameters. Verify the simulated tire pressures do not differ more than +/-30 kPa (3.6 PSI) of the scan tool reading.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Tire Pressure Indicator Sensor Replacement

• Tire Pressure Indicator Sensor Learn