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2003 Pontiac Montana 3.4L MIL Lamp on
Posted to GM Driveability on 6/28/2011 11 Replies

This van came in with a check engine light on. P0171 stored along with an oil pressure switch code (can't remember the code)Tested for vac. leaks none found. Oxygen sensors read normal. Reset fuel trim and LT trim numbers begin to climb to 20% right away.

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  Related Documents & Media  2003 Pontiac Montana

 
Message Closed w/Summary

car Vehicle Data

2003 Pontiac Montana

VIN 1GMDU23E83
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAfter Several Drive Cycles
Misc.P0171 Lean Bank 1

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Message Closed w/Summary

car Vehicle Data

2003 Pontiac Montana

VIN 1GMDU23E83
Engine3.4 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAfter Several Drive Cycles
Misc.P0171 Lean Bank 1

Trouble Codes

P0171Fuel System Too Lean (Bank 1)