Code
C0755
HUMMER
C — Chassis
Tire Pressure Monitor (TPM) system sensor not transmitting
Views:
UK: 7
EN: 13
RU: 5
AI status
Completed
Completed
100%
Causes
- TPMS sensor battery depleted or end-of-life
- Damaged or failed TPMS sensor (physical damage, corrosion, sensor electronics)
- Sensor not programmed/paired or sensor ID missing in vehicle module
- Incorrect replacement sensor frequency or wrong part
- Antenna/receiver (TPMS module) fault, power, or ground issue
- Wiring or CAN/bus communication fault between TPMS module and vehicle network
Symptoms
- TPMS warning lamp illuminated or flashing
- One or more tires show no pressure reading on instrument cluster or scan tool
- Intermittent or missing tire pressure updates
- Inability to perform TPMS relearn for that wheel
- Possible CAN/communication-related warnings if receiver module faults
What to check
- Retrieve current and pending DTCs and freeze frame with a capable scan tool
- Use a TPMS-capable diagnostic tool to attempt to read sensor IDs and reported pressures
- Visually inspect sensors and valve stems for damage or corrosion
- Check for recent tire service or sensor replacement (possible wrong part or unprogrammed sensor)
- Verify TPMS module/antenna power, ground, and CAN bus connectivity with a multimeter and scan tool
- Check for related network codes (U-codes) that indicate communication loss
Signal parameters
- Typical TPMS RF frequencies: ~315 MHz (North America) or ~433/434 MHz (Europe/others)
- Data typically includes sensor ID, tire pressure, temperature, and battery status
- Transmission intervals: several minutes at rest, more frequent during driving or after a wake event (varies by manufacturer)
- Modulation: simple ASK/FSK RF modulation (vehicle-specific implementation)
- Signal range: short-range (sensor to in-wheel antenna/module). Obstructions/grounding can attenuate signal
Diagnostic algorithm
- Confirm C0755 is current; record any additional DTCs and the affected wheel(s) if reported.
- Use a TPMS diagnostic tool to scan all 4 sensors. Note which sensor(s) do not respond and whether any IDs are missing.
- Attempt to wake non-responding sensor(s) with a handheld TPMS activator. If the sensor responds, verify reported pressure/battery data.
- If sensor does not wake, inspect physical condition of the valve/sensor and look for signs of damage, corrosion, or recent tire service.
- Verify sensor part number and regional frequency to ensure compatibility. Replace with correct-frequency sensor if incorrect.
- Check TPMS receiver/module: verify power and ground at the module connector, check CAN/network messages via scan tool for communications with TPMS module.
- If wiring or module faults are suspected, backprobe and measure voltages, check continuity to antenna(s) and grounds, and inspect connectors for corrosion.
- If module and wiring are good but sensor still non-responsive, replace the suspect TPMS sensor and perform the manufacturer-specific learn/relearn procedure.
- Clear codes and road-test to confirm normal transmission and that DTC does not return. If issue persists, consider replacing/repairing TPMS receiver or diagnosing CAN network faults.
Likely causes
- Dead/weak TPMS sensor battery (most common)
- Failed/damaged sensor (impact/corrosion)
- Sensor not learned to the vehicle or wrong sensor frequency
- TPMS receiver/antenna module power/ground or wiring fault
Fault status
Status
TPMS sensor not transmitting — vehicle TPMS module is not receiving RF data/ID from one or more wheel sensors. Warning lamp likely active until sensors or receiver/communication fault resolved.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
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Code
C0755
OPEL
C — Chassis
Pressure Sensor Module B Malfunction
Views:
UK: 4
EN: 8
RU: 5
AI status
Completed
Completed
100%
Causes
- TPMS sensor battery depleted or end-of-life
- Damaged or failed TPMS sensor (physical damage, corrosion, sensor electronics)
- Sensor not programmed/paired or sensor ID missing in vehicle module
- Incorrect replacement sensor frequency or wrong part
- Antenna/receiver (TPMS module) fault, power, or ground issue
- Wiring or CAN/bus communication fault between TPMS module and vehicle network
Symptoms
- TPMS warning lamp illuminated or flashing
- One or more tires show no pressure reading on instrument cluster or scan tool
- Intermittent or missing tire pressure updates
- Inability to perform TPMS relearn for that wheel
- Possible CAN/communication-related warnings if receiver module faults
What to check
- Retrieve current and pending DTCs and freeze frame with a capable scan tool
- Use a TPMS-capable diagnostic tool to attempt to read sensor IDs and reported pressures
- Visually inspect sensors and valve stems for damage or corrosion
- Check for recent tire service or sensor replacement (possible wrong part or unprogrammed sensor)
- Verify TPMS module/antenna power, ground, and CAN bus connectivity with a multimeter and scan tool
- Check for related network codes (U-codes) that indicate communication loss
Signal parameters
- Typical TPMS RF frequencies: ~315 MHz (North America) or ~433/434 MHz (Europe/others)
- Data typically includes sensor ID, tire pressure, temperature, and battery status
- Transmission intervals: several minutes at rest, more frequent during driving or after a wake event (varies by manufacturer)
- Modulation: simple ASK/FSK RF modulation (vehicle-specific implementation)
- Signal range: short-range (sensor to in-wheel antenna/module). Obstructions/grounding can attenuate signal
Diagnostic algorithm
- Confirm C0755 is current; record any additional DTCs and the affected wheel(s) if reported.
- Use a TPMS diagnostic tool to scan all 4 sensors. Note which sensor(s) do not respond and whether any IDs are missing.
- Attempt to wake non-responding sensor(s) with a handheld TPMS activator. If the sensor responds, verify reported pressure/battery data.
- If sensor does not wake, inspect physical condition of the valve/sensor and look for signs of damage, corrosion, or recent tire service.
- Verify sensor part number and regional frequency to ensure compatibility. Replace with correct-frequency sensor if incorrect.
- Check TPMS receiver/module: verify power and ground at the module connector, check CAN/network messages via scan tool for communications with TPMS module.
- If wiring or module faults are suspected, backprobe and measure voltages, check continuity to antenna(s) and grounds, and inspect connectors for corrosion.
- If module and wiring are good but sensor still non-responsive, replace the suspect TPMS sensor and perform the manufacturer-specific learn/relearn procedure.
- Clear codes and road-test to confirm normal transmission and that DTC does not return. If issue persists, consider replacing/repairing TPMS receiver or diagnosing CAN network faults.
Likely causes
- Dead/weak TPMS sensor battery (most common)
- Failed/damaged sensor (impact/corrosion)
- Sensor not learned to the vehicle or wrong sensor frequency
- TPMS receiver/antenna module power/ground or wiring fault
Fault status
Status
TPMS sensor not transmitting — vehicle TPMS module is not receiving RF data/ID from one or more wheel sensors. Warning lamp likely active until sensors or receiver/communication fault resolved.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 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