Tire Pressure Monitor Sensor Not Transmitting (Right Rear) (GM)
The C0765 code means the vehicle's onboard diagnostic system has detected: Tire Pressure Monitor Sensor Not Transmitting (Right Rear) (GM). This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $50 - $150 (usually one TPMS sensor battery/unit + relearn)
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What Are the Symptoms of C0765?
- TPMS warning light on
- One wheel's pressure not displayed or stuck
What Causes C0765? (Most Likely First)
- Fault in the tire pressure monitoring component this code names (Tire Pressure Monitor Sensor Not Transmitting (Right Rear)) High
- Damaged wiring or a corroded connector in that circuit - road-splash zones corrode connectors High
- Failed related sensor or actuator Moderate
- Control module fault Low
Can I Still Drive with C0765?
Yes, but fix soon. C0765 is rated moderate severity. It is not an immediate stop-driving fault, but it will not clear itself — book the repair rather than ignoring the light.
Frequently Asked Questions
What does C0765 mean?
C0765 is a chassis code used primarily by GM vehicles: Tire Pressure Monitor Sensor Not Transmitting (Right Rear). It concerns the tire pressure monitoring system.
Can I keep driving with C0765?
Generally yes; the tire pressure monitoring system may be degraded. Diagnose soon, and treat any brake- or steering-related behavior change as urgent.
Is C0765 the same on every make?
The decimal C0xxx range is dominated by GM's assignments (Chevrolet, GMC, Buick, Cadillac). Other makes may use this ID differently - if your vehicle is not a GM product, verify the meaning in your make's service information.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose C0765?
-
Read the code with a GM-capable scan tool and note the symptom byte/subcode if shown.
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View live data for the named circuit (e.g. all four wheel speeds while rolling for wheel-speed codes).
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Inspect the circuit's wiring and connectors - chassis harnesses live in the splash zone and corrode first.
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Follow the GM pinpoint test for C0765 before replacing components.
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- FMVSS 138, "Tire pressure monitoring systems" (49 CFR 571.138)cited for the driver-visible behaviour this fault produces, NOT for the meaning of the code, which this standard does not define. S4.4(a) requires a malfunction warning within 20 minutes of a fault affecting the generation or transmission of TPMS signals. On a vehicle using one lamp for both jobs, S4.4(c) requires that lamp to flash for at least 60 and no more than 90 seconds after the ignition is switched on and then stay continuously lit, repeating every ignition cycle until the fault is corrected — which is why this code produces a flashing-then-solid light rather than the steady light of simple under-inflation. Applies to vehicles of 10,000 lb GVWR or less, excluding those with dual wheels on an axle (S2).
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Which Vehicles Commonly Get C0765?
- Chevrolet, GMC, Buick, Cadillac (GM chassis code range)
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