P0420 Diagnostic Trouble Code Discussion for October 2018
Catalyst Efficiency Below Normal (Bank 1)
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| Help Request | Posted | |
| 2014 Ford F-250 Super Duty XL 6.2L MIL Lamp on VIN: A60EEA5393 P0420: Catalytic converter below threshold bank 1. ... correct. Vehicle originally came in with P0430. Found exhaust manifolds cracked down the middle on both sides. Replaced manifolds, vehicle returned with P0430, P0420. Replaced catalytic converter assembly, (both cats) w... |
October 10, 2018 | |
| 2015 Ford Transit-350 HD XLT 3.2L MIL Lamp on VIN: 1FBAX2CV3F P0420: Catalyst Efficiency Below Threshold. ... regen at idle when commanded but will not regen going down the road. It seems the DOC does not get hot enough to perform the regen. (The DOC is new). After performing a manual regen code P0420 will reset after driving abo... |
October 12, 2018 | |
| 2003 Honda Accord LX 2.4L Hesitation VIN: 1HGCM56303 P0420: Catalyst Efficiency Below Threshold (Bank 1). Initial start in the morning car will hesitate if trying to accelerate to quickly, so you have to feather the throttle in order to get to 55 mph. If I pull over, shut the key off and restart the car, it will drive perfectly for the rest of the day. I did d... |
October 12, 2018 | |
| 2014 Ford F-250 Super Duty XL 6.2L MIL Lamp on VIN: A60EEA5393 P0420: Catalytic converter below threshold bank 1. ... correct. Vehicle originally came in with P0430. Found exhaust manifolds cracked down the middle on both sides. Replaced manifolds, vehicle returned with P0430, P0420. Replaced catalytic converter assembly, (both cats) w... |
October 18, 2018 | |
| 2012 Honda Odyssey EX-L 3.5L Surge, Cuts out, MIL Lamp on VIN: 5FNRL5H64C P0420: Cat efficiency. ... weird one I never experienced. Cust. told Van suddenly lost power and no acceleration. Drove home and start again and all ok but MIL on with Trac. off sign. (I know Trac. sign due to MIL). He visited me and I checked codes as above (One more code exis... |
October 22, 2018 | |
| 2012 Honda Odyssey EX-L 3.5L Surge, Cuts out, MIL Lamp on VIN: 5FNRL5H64C P0420: Cat efficiency. ... weird one I never experienced. Cust. told Van suddenly lost power and no acceleration. Drove home and start again and all ok but MIL on with Trac. off sign. (I know Trac. sign due to MIL). He visited me and I checked codes as above (One more code exis... |
October 23, 2018 |
