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Symptom: P0129-BAROMETRIC PRESSURE OUT-OF-RANGE LOW When Monitored and Set Condition: P0129-BAROMETRIC PRESSURE OUT-OF-RANGE LOW When Monitored: With the ignition key on. No Cam or Crank signal within 75 ms. Engine speed at less than 250 RPM. Set Condition: The PCM senses the voltage from the MAP sensor to be less than 2.196 volts but above 0.0392 of a volt for 300 milliseconds.One Trip Fault. POSSIBLE CAUSES IAC SIGNAL CIRCUIT LOW IAC SIGNAL CIRCUIT HIGH INTERMITTENT CONDITION (K6) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE (K6) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND (K6) 5 VOLT SUPPLY CIRCUIT OPEN MAP SENSOR INTERNAL FAILURE (K1) MAP SIGNAL CIRCUIT OPEN (K1) MAP SIGNAL CIRCUIT SHORTED TO GROUND PCM (K6) 5 VOLT SUPPLY CIRCUIT PCM (K1) MAP SIG CIRCUIT TEST ACTION APPLICABILITY 1 NOTE: Refer to any TSBs that may apply to this DTC before proceeding. t, read the MAP Sensor voltage. Is the voltage below 2.2 volts. All Yes → Go To 2 No → Go To 11 2 Turn the ignition off. All Yes → Go To 3 No → Go To 7 86 DRIVEABILITY - NGC |