Symptom:
P0129-BAROMETRIC PRESSURE OUT-OF-RANGE
When Monitored and Set Condition:
P0129-BAROMETRIC PRESSURE OUT-OF-RANGE
When Monitored: Withthe 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 greater than 4.9
volts (2.4 volts Turbo) but below 2.28 volts (1.2 Turbo) of a volt for 300 milliseconds. One
Trip Fault.
POSSIBLE CAUSES
IAC SIGNAL CIRCUIT LOW
IAC SIGNAL CIRCUIT HIGH
INTERMITTENT CONDITION
(K7) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
(K7) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
(K7) 5 VOLT SUPPLY CIRCUIT OPEN
MAP SENSOR INTERNAL FAILURE
(K1) MAP SIGNAL CIRCUIT OPEN
(K1) MAP SIGNAL CIRCUIT SHORTED TO GROUND
PCM (K7) 5 VOLT SUPPLY CIRCUIT
PCM (K1) MAP SIGNAL
TEST ACTION APPLICABILITY
1 NOTE: Refer to any TSBs that may apply to this DTC before proceeding.
Ignition on, engine not running.
With the DRBIIIt, read the MAP Sensor voltage.
Is the voltage greater than 4.9 volts (2.4 volts turbo).
All
Yes → Go To 3
No → Go To 2
2 Ignition on, engine not running.
With the DRBIIIt, read the MAP Sensor voltage.
Is the voltage below 2.28 volts (1.2 volts Turbo).
All
Yes → Go To 3
No → Go To 12
88
DRIVEABILITY - NGC
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