P0072

Описание

Ambient Air Temperature Sensor (G17), Signal too Low

Частые симптомы

• Abnormally low temperature readings
• Check Engine Light
• Possible excessive cold start enrichment
• Climate system over-compensating for cold
• Incorrect temperature-based adjustments

Возможные причины

• Short to ground in temperature sensor circuit
• Failed temperature sensor
• Corroded or damaged sensor connections
• ECU reference voltage issues
• Sensor calibration error

Диагностика

1. 1. Check temperature sensor signal voltage
2. 2. Test for shorts to ground in sensor circuit
3. 3. Measure sensor resistance
4. 4. Inspect sensor connections for corrosion
5. 5. Verify ECU reference voltage

Решения по ремонту

• Repair shorted temperature sensor wiring
• Replace faulty ambient temperature sensor
• Clean or replace corroded connections
• Fix ECU reference voltage if needed
• Reset temperature adaptations

Профилактика

• Protect temperature sensor wiring from moisture
• Regular electrical connection maintenance
• Address abnormal temperature readings promptly