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2002 Chevrolet Trailblazer LS 4.2L MIL Lamp on
Posted to GM Driveability on 12/9/2008 7 Replies

Vehicle came in to my shop do to not passing emmision test,I scanned it and it showed thre [...],P0172 and P0340,I did order the cam sensor and did not install it yet,but I'm testing the fuel trims and can not figure out why it is lean and rich at the same tim...

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  Related Documents & Media  2002 Chevrolet Trailblazer LS

 
Message Closed w/FIX

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S82
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)
P0340Camshaft Position Sensor 'A' (TDC) Circuit Intermittent
Message Closed w/FIX

car Vehicle Data

2002 Chevrolet Trailblazer LS

VIN 1GNDT13S82
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0172Fuel System Too Rich (Bank 1)
P0340Camshaft Position Sensor 'A' (TDC) Circuit Intermittent