Code
U0475
Generic
U — Network/User
Invalid Data Received From Restraints System Sensor E
AI status
Completed
Completed
100%
Causes
- Failed or intermittent restraints system sensor (Sensor E)
- Damaged wiring or poor connector contact to the sensor
- Corroded or bent pins in connectors
- Faulty ground or reference voltage to the sensor
- Bus communication fault (CAN/LIN) between sensor and restraints control module
- Faulty restraints control module (RCM) or related module
Symptoms
- SRS/airbag warning lamp illuminated
- Possible seatbelt pretensioner or airbag suppression (indicator) active
- Additional restraint system-related DTCs stored
- Possible loss of some restraint system functions or module warnings
- Intermittent or permanent warning depending on fault
What to check
- Retrieve all stored codes and freeze-frame data with a capable scan tool
- Confirm code is current or history and note any other related U-codes
- Locate Sensor E and visually inspect connector and harness for damage, corrosion, or water ingress
- Check reference voltage and ground at the sensor connector
- Check CAN/LIN bus voltages and continuity to the restraints control module
- Perform wiggle test on harness while monitoring live data for change
Signal parameters
- Sensor reference voltage: typically 5.0 V ±0.25 V (verify factory spec)
- Sensor signal: may be 0–5 V analog or digital data — consult service manual
- Ground continuity: near 0 ohms to chassis ground
- CAN High idle voltage: typically ~2.5 V (verify on vehicle)
- CAN Low idle voltage: typically ~2.5 V (verify on vehicle)
- Bus termination resistance: approx. 45–70 ohms across CAN_H and CAN_L (vehicle dependent)
Diagnostic algorithm
- Connect a factory-level or OEM-capable scan tool. Read and record all DTCs, freeze frame, and live data from the restraints control module and related modules.
- Identify the physical location and wiring harness routing for 'Sensor E' using the service manual.
- Perform a thorough visual inspection of the sensor, connector, and harness. Repair any obvious damage (corrosion, pin damage, chafing).
- With connector connected, check sensor reference voltage and ground at the connector pins. Compare to factory specs.
- Monitor the sensor signal with a lab scope or multimeter while exercising the sensor or creating the condition the sensor detects. Look for noise, dropouts, or out-of-range values.
- Check communication lines (CAN/LIN) for proper voltages, continuity, and termination. Use scope to look for bus errors or corrupted frames if available.
- Perform a wiggle test on sensor wiring while observing live data and DTC status to find intermittent faults.
- If wiring, connector, or power/ground faults are found, repair and retest. If wiring is good and the sensor signal is invalid, replace Sensor E.
- If the new sensor does not resolve the code, follow module-level diagnostics: check restraints control module power/ground/comm and update/reflash module software per manufacturer procedures.
- Clear codes and perform a road or function test to confirm the fault does not return. Re-scan all modules for related DTCs and verify proper system operation.
Likely causes
- Moisture-corroded connector at Sensor E
- Broken or chafed wiring harness on sensor circuit
- Intermittent power or ground to the sensor
- Low-level CAN data corruption due to missing termination or wiring fault
- Recent collision damage or repair work that disturbed sensor or harness
Fault status
Status
Restraints control module has detected invalid or corrupted data from Restraints System Sensor E and stored DTC U0475. SRS warning lamp may be illuminated and restraint functions could be affected until the fault is corrected.
Repair difficulty: Medium
Diagnostic time: 1.5-3 hours
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Code
U0475
HYUNDAI
U — Network/User
Invalid Data Received From “Restraints System Sensor E”
AI status
Completed
Completed
100%
Causes
- Failed or intermittent restraints system sensor (Sensor E)
- Damaged wiring or poor connector contact to the sensor
- Corroded or bent pins in connectors
- Faulty ground or reference voltage to the sensor
- Bus communication fault (CAN/LIN) between sensor and restraints control module
- Faulty restraints control module (RCM) or related module
Symptoms
- SRS/airbag warning lamp illuminated
- Possible seatbelt pretensioner or airbag suppression (indicator) active
- Additional restraint system-related DTCs stored
- Possible loss of some restraint system functions or module warnings
- Intermittent or permanent warning depending on fault
What to check
- Retrieve all stored codes and freeze-frame data with a capable scan tool
- Confirm code is current or history and note any other related U-codes
- Locate Sensor E and visually inspect connector and harness for damage, corrosion, or water ingress
- Check reference voltage and ground at the sensor connector
- Check CAN/LIN bus voltages and continuity to the restraints control module
- Perform wiggle test on harness while monitoring live data for change
Signal parameters
- Sensor reference voltage: typically 5.0 V ±0.25 V (verify factory spec)
- Sensor signal: may be 0–5 V analog or digital data — consult service manual
- Ground continuity: near 0 ohms to chassis ground
- CAN High idle voltage: typically ~2.5 V (verify on vehicle)
- CAN Low idle voltage: typically ~2.5 V (verify on vehicle)
- Bus termination resistance: approx. 45–70 ohms across CAN_H and CAN_L (vehicle dependent)
Diagnostic algorithm
- Connect a factory-level or OEM-capable scan tool. Read and record all DTCs, freeze frame, and live data from the restraints control module and related modules.
- Identify the physical location and wiring harness routing for 'Sensor E' using the service manual.
- Perform a thorough visual inspection of the sensor, connector, and harness. Repair any obvious damage (corrosion, pin damage, chafing).
- With connector connected, check sensor reference voltage and ground at the connector pins. Compare to factory specs.
- Monitor the sensor signal with a lab scope or multimeter while exercising the sensor or creating the condition the sensor detects. Look for noise, dropouts, or out-of-range values.
- Check communication lines (CAN/LIN) for proper voltages, continuity, and termination. Use scope to look for bus errors or corrupted frames if available.
- Perform a wiggle test on sensor wiring while observing live data and DTC status to find intermittent faults.
- If wiring, connector, or power/ground faults are found, repair and retest. If wiring is good and the sensor signal is invalid, replace Sensor E.
- If the new sensor does not resolve the code, follow module-level diagnostics: check restraints control module power/ground/comm and update/reflash module software per manufacturer procedures.
- Clear codes and perform a road or function test to confirm the fault does not return. Re-scan all modules for related DTCs and verify proper system operation.
Likely causes
- Moisture-corroded connector at Sensor E
- Broken or chafed wiring harness on sensor circuit
- Intermittent power or ground to the sensor
- Low-level CAN data corruption due to missing termination or wiring fault
- Recent collision damage or repair work that disturbed sensor or harness
Fault status
Status
Restraints control module has detected invalid or corrupted data from Restraints System Sensor E and stored DTC U0475. SRS warning lamp may be illuminated and restraint functions could be affected until the fault is corrected.
Repair difficulty: Medium
Diagnostic time: 1.5-3 hours
Similar codes
Repair manuals
Manual library for HYUNDAI
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