
2012 Jeep Grand Cherokee Laredo 3.6L MIL Lamp on
Hey all, 2012 Jeep Grand Cherokee 3.6L came in with stored p0420 and p0430 catalyst efficiency codes. Front oxygen sensors are not lazy (switch rich/lean normally) and downstream sensors look normal at 2500 rpm, holding steady near half a volt, and ther...
FIX posted 12/2/2020
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Message Closed w/FIX
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VIN | 1C4RJFAG5C |
Engine | 3.6 L / 6 cyl / FLEX |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Hard Fault |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
P0430 | Catalyst Efficiency Below Threshold (Bank 2) |
Message Closed w/FIX
Vehicle Data
2012 Jeep Grand Cherokee Laredo
VIN | 1C4RJFAG5C |
Engine | 3.6 L / 6 cyl / FLEX |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Hard Fault |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
P0430 | Catalyst Efficiency Below Threshold (Bank 2) |