What this code means

The PCM detected intermittent low voltage drops from the MAP sensor circuit. This indicates a sporadic loss of signal, often caused by a loose connection.

Symptoms

• Check Engine Light (intermittent)
• Intermittent stalling
• Surging at idle
• Hesitation

Common causes

• Loose MAP sensor connector
• Intermittent open in wiring
• Faulty MAP sensor
• Corroded terminals

Diagnostic steps

1. Wiggle test MAP sensor connector while monitoring voltage
2. Inspect wiring for breaks
3. Test MAP sensor
4. Check 5-volt reference supply

Repair notes

Clean connectors and repair any damaged wiring. Replace MAP sensor if faulty.

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