Code
C0765
HUMMER
C — Chassis
Tire Pressure Monitor (TPM) system sensor not transmitting
Views:
UK: 3
EN: 11
RU: 9
AI status
Completed
Completed
100%
Causes
- TPMS sensor battery depleted (end of sensor life)
- Faulty or physically damaged TPMS sensor (valve, electronics)
- Sensor not programmed/learned to vehicle or ID mismatch after tire service
- Intermittent or broken antenna/coax feed to TPMS module or bad module
- Wiring or connector fault between TPMS antenna/module and control module
- Severe radio-frequency (RF) interference or incorrect frequency sensor
Symptoms
- TPMS warning lamp or message on the dash
- No pressure/temperature data displayed for one wheel in scan tool or cluster
- Intermittent TPMS alerts for the affected wheel
- Unable to complete sensor relearn for the affected wheel
- Tire pressure unable to be monitored/diagnosed for that wheel
What to check
- Read all stored TPMS codes and freeze frame with a capable scan tool
- Retrieve TPMS sensor IDs from vehicle and compare to installed sensors
- Visually inspect the affected wheel's sensor and valve stem for damage or corrosion
- Measure tire pressures to confirm actual pressure; inspect for leaks
- Attempt to activate the sensor with a TPMS activator and observe response in scan tool
- Check vehicle battery voltage and ground connections
Signal parameters
- Typical TPMS RF frequency: 315 MHz or 433 MHz (vehicle-specific)
- Sensor unique ID code transmitted in each RF burst
- Sensor battery voltage typically ~3.0 V (degrades with age)
- Transmitted data: tire pressure, temperature, battery status, sensor ID
- Transmission interval: periodic while driving and when sensor wakes (varies by sensor)
- Sensor wake-up by motion, pressure change, or direct activation using TPMS tool
Diagnostic algorithm
- Connect a scan tool that supports TPMS functions. Read and record the exact C0765 and any other stored codes and live TPMS data (IDs, pressures, battery status).
- Verify actual tire pressures and condition. Inflate to recommended pressures and reseat if required. Clear the code and attempt to drive to see if the code returns.
- Use a TPMS activator to trigger the suspected sensor while monitoring the scan tool. If the sensor responds with ID and data, perform the OEM relearn/learn procedure and clear codes.
- If the sensor does not respond to activation, remove the wheel and inspect the sensor and valve stem for corrosion, physical damage, or water intrusion. Replace sensor if damaged or if battery is likely dead (non-serviceable sensors require replacement).
- If a replacement sensor is installed, program/learn the new sensor ID per the manufacturer procedure and confirm reception. Retest by driving and scanning.
- If replaced sensor still does not transmit, inspect/repair wiring and connectors to the TPMS antenna/module; check for antenna grounding and continuity.
- If antenna and wiring are OK, verify TPMS module operation and communication with vehicle networks (scan for U-codes or CAN communication errors). Replace or reprogram the TPMS control module only after confirming sensors and antennas are functional.
- After repairs, clear all TPMS codes, perform required relearn, and verify proper system operation over a test drive. Document sensor IDs and replacement parts.
Likely causes
- Weak or dead TPMS sensor battery (most common on older sensors)
- Sensor physically damaged (corroded valve, impact, or cracked housing)
- Sensor not learned or ID lost during tire service
- Faulty TPMS antenna or poor grounding/connector to module
- Module fault or communication error with BCM/ABS module
Fault status
Status
TPMS sensor for one wheel is not transmitting — control module cannot receive expected sensor data (C0765).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
C0765
OPEL
C — Chassis
Pressure Sensor Module D Malfunction
Views:
UK: 5
EN: 7
RU: 6
AI status
Completed
Completed
100%
Causes
- TPMS sensor battery depleted (end of sensor life)
- Faulty or physically damaged TPMS sensor (valve, electronics)
- Sensor not programmed/learned to vehicle or ID mismatch after tire service
- Intermittent or broken antenna/coax feed to TPMS module or bad module
- Wiring or connector fault between TPMS antenna/module and control module
- Severe radio-frequency (RF) interference or incorrect frequency sensor
Symptoms
- TPMS warning lamp or message on the dash
- No pressure/temperature data displayed for one wheel in scan tool or cluster
- Intermittent TPMS alerts for the affected wheel
- Unable to complete sensor relearn for the affected wheel
- Tire pressure unable to be monitored/diagnosed for that wheel
What to check
- Read all stored TPMS codes and freeze frame with a capable scan tool
- Retrieve TPMS sensor IDs from vehicle and compare to installed sensors
- Visually inspect the affected wheel's sensor and valve stem for damage or corrosion
- Measure tire pressures to confirm actual pressure; inspect for leaks
- Attempt to activate the sensor with a TPMS activator and observe response in scan tool
- Check vehicle battery voltage and ground connections
Signal parameters
- Typical TPMS RF frequency: 315 MHz or 433 MHz (vehicle-specific)
- Sensor unique ID code transmitted in each RF burst
- Sensor battery voltage typically ~3.0 V (degrades with age)
- Transmitted data: tire pressure, temperature, battery status, sensor ID
- Transmission interval: periodic while driving and when sensor wakes (varies by sensor)
- Sensor wake-up by motion, pressure change, or direct activation using TPMS tool
Diagnostic algorithm
- Connect a scan tool that supports TPMS functions. Read and record the exact C0765 and any other stored codes and live TPMS data (IDs, pressures, battery status).
- Verify actual tire pressures and condition. Inflate to recommended pressures and reseat if required. Clear the code and attempt to drive to see if the code returns.
- Use a TPMS activator to trigger the suspected sensor while monitoring the scan tool. If the sensor responds with ID and data, perform the OEM relearn/learn procedure and clear codes.
- If the sensor does not respond to activation, remove the wheel and inspect the sensor and valve stem for corrosion, physical damage, or water intrusion. Replace sensor if damaged or if battery is likely dead (non-serviceable sensors require replacement).
- If a replacement sensor is installed, program/learn the new sensor ID per the manufacturer procedure and confirm reception. Retest by driving and scanning.
- If replaced sensor still does not transmit, inspect/repair wiring and connectors to the TPMS antenna/module; check for antenna grounding and continuity.
- If antenna and wiring are OK, verify TPMS module operation and communication with vehicle networks (scan for U-codes or CAN communication errors). Replace or reprogram the TPMS control module only after confirming sensors and antennas are functional.
- After repairs, clear all TPMS codes, perform required relearn, and verify proper system operation over a test drive. Document sensor IDs and replacement parts.
Likely causes
- Weak or dead TPMS sensor battery (most common on older sensors)
- Sensor physically damaged (corroded valve, impact, or cracked housing)
- Sensor not learned or ID lost during tire service
- Faulty TPMS antenna or poor grounding/connector to module
- Module fault or communication error with BCM/ABS module
Fault status
Status
TPMS sensor for one wheel is not transmitting — control module cannot receive expected sensor data (C0765).
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email