P0073

Описание

Ambient Air Temperature Sensor (G17), Signal too High

Частые симптомы

• Abnormally high temperature readings
• Check Engine Light
• Possible insufficient cold start enrichment
• Climate system under-compensating for cold
• Incorrect temperature-based engine adjustments

Возможные причины

• Short to power in temperature sensor circuit
• Failed temperature sensor
• Open circuit or high resistance
• ECU signal processing fault
• Sensor calibration error

Диагностика

1. 1. Check temperature sensor signal voltage
2. 2. Test for shorts to power in sensor circuit
3. 3. Measure sensor resistance and circuit continuity
4. 4. Inspect for open circuits or high resistance
5. 5. Verify ECU signal processing

Решения по ремонту

• Repair shorted temperature sensor wiring to power
• Replace faulty ambient temperature sensor
• Repair open circuits or high resistance issues
• Update ECU software if processing faulty
• Reset temperature adaptations

Профилактика

• Protect temperature sensor wiring from damage
• Regular circuit continuity checks
• Address abnormal high temperature readings