2005 Dodge Ram 1500 ST 5.7L MIL Lamp on
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...
FIX posted 12/17/2012
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Message Closed w/FIX
Vehicle Data2005 Dodge Ram 1500 ST
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2005 Dodge Ram 1500 ST
VIN | 1D7HU18D65 |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 5-speed Automatic (Electronic) |
Delivery | Fuel Injection / SEFI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |