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1999 Dodge Ram 1500 Laramie 5.9L Poor Idle Quality, Misfire
Posted to Chrysler Driveability on 9/14/2011 8 Replies

Truck came in with check engine light on and customer requested repairs be made in order to pass DEQ. Code came back as P0420: CAT Efficiency low. Read data stream while analysing emmisions; Both Pre CAT and Post CAT O2 sensors mimick each other. Readings are ...

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  Related Documents & Media  1999 Dodge Ram 1500 Laramie

 
Message Closed w/Summary

car Vehicle Data

1999 Dodge Ram 1500 Laramie

VIN 3B7HF13Z0X
Engine5.9 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/Summary

car Vehicle Data

1999 Dodge Ram 1500 Laramie

VIN 3B7HF13Z0X
Engine5.9 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Misfire
OccursIdle

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)