FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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P0129

Test 1 - 2:




Test 3 - 7:




Test 8 - 12:




Test 13:






SYMPTOM
P0129-BAROMETRIC PRESSURE OUT-OF-RANGE

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 greater than 4.9L 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 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