What this code means

The DME detected an electrical malfunction in the barometric pressure sensor circuit. This sensor provides altitude compensation data for fuel and ignition calculations.

Symptoms

• Check Engine Light
• Poor high-altitude performance
• Incorrect fuel mixture
• Reduced power

Common causes

• Faulty barometric pressure sensor
• Wiring damage to sensor
• Corroded sensor connector
• DME internal reference voltage fault

Diagnostic steps

1. Test sensor supply voltage
2. Check sensor output signal range
3. Inspect wiring and connector
4. Compare barometric reading with known altitude

Repair notes

Replace the barometric pressure sensor or repair the wiring fault.

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