low effeciency on catalys bank 1 engine light comes on , check with scanner and comes comes up on scanner po 420 bank 1 that is the upstream o2 sensor
Po 420 ? Red Light comes on, problem with PO 420? code p0420 refers to cat converter system, bank 1 efficiency below threshold===causes --cat converter--wiring HO2S sensor 2 check that the cat ...
p0420 oil consuction po 420 is catalytic system below efficency bank 1. bank 1 converter and o2 sensors should be replaced
po 400 po 420 2002 nissan frontier nissan frontier 2002 code PO420 and PO400 catalyst system Efficiency below threshold Bank 1 and Exhaust gas Recirculation flow help with this how can I fix it Hi, ...
...twc system low bank 1 code Vehicle needs a Primary or first position Oxygen sensor, bank one just means it's the O2 sensor before catalytic converter i have 1998 gmc pick up truck and has code po ...
...PO 420--- is a failed Exhaust Converter on Bank #1 They last 12 to 14 years They mostly fail from rich fuel conditions,cylinder misfires & old oxygen sensors May want to go over your preventative ...
...Po 420 came up on my Pontiac grand am and I recently replaced the O2 sensor on bank 1. What do u think? Sometimes replacing the sensor fixes the problem, but more often the catalytic converter is at ...
...po-750 Code 750 is a problem with one of the shift solenoids inside the transmission. Code 420 is for the catalytic converter performance bank one and code 430 is the same thing for bank two. The ...
...po 420 bank 1 which sensor do i change. That could be the cataylic convetor you could try the oxygen sensor behind the cat the last one to the rear of the vehicle bank 1 sensor # 3 but P0420 is TWC ...
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