P0074

Описание

Ambient Air Temperature Sensor (G17), Circuit Intermittent

Частые симптомы

• Fluctuating temperature readings
• Intermittent Check Engine Light
• Erratic climate control behavior
• Unstable temperature-based adjustments
• Sporadic temperature display issues

Возможные причины

• Loose or corroded sensor connections
• Intermittent wiring issues
• Failing temperature sensor
• Vibration-related connection problems
• ECU intermittent signal processing

Диагностика

1. 1. Monitor temperature sensor signal during vibration
2. 2. Test for intermittent connections in circuit
3. 3. Inspect sensor connectors and terminals
4. 4. Check sensor during temperature changes
5. 5. Verify ECU signal stability

Решения по ремонту

• Secure loose sensor connections
• Clean and repair corroded terminals
• Replace failing ambient temperature sensor
• Repair intermittent wiring issues
• Replace ECU if intermittent processing

Профилактика

• Secure all climate system wiring properly
• Protect connectors from moisture and vibration
• Regular connection integrity checks