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2005 Dodge Ram 1500 ST 5.7L MIL Lamp on
Posted to Chrysler Driveability on 12/9/2012 7 Replies

I can tell Cat code is not a Cat problem it is a problem with fuel control on number one cylinder. Was going into open loop on bank one and no switches on bank one upstream O2 which is normal in open loop. Bank two is in closed loop front O2 switching fine. Sw...

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  Related Documents & Media  2005 Dodge Ram 1500 ST

 
Message Closed w/FIX

car Vehicle Data

2005 Dodge Ram 1500 ST

VIN 1D7HU18D65
Engine5.7 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

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

car Vehicle Data

2005 Dodge Ram 1500 ST

VIN 1D7HU18D65
Engine5.7 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)