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roy
roy, import/domestic specialest
Category: Toyota
Satisfied Customers: 4637
Experience:  ASE master tech for 40 years
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I failed an Idaho emissions test. Codes. PO420. PO440. And

Customer Question

I failed an Idaho emissions test. Codes. PO420. PO440. And P1135. Auto parts store recommended cataclean fuel and exhaust system cleaner. I tried it and so far the malfunction indicator light is still on for my 2001 Toyota sienna. 180,000 miles on van.
Submitted: 1 year ago.
Category: Toyota
Expert:  roy replied 1 year ago.

good evening my name is ***** ***** I will assist

the 420 is a cat effiency code. the cat converter has to be replaced as the internals are worn out and cannot do there job anymore.

the 440 is an evap code. you will need a scan tool, volt meter and smoke machine to help track down the leak in the system.

1135 is a oxygen sensor heater code. the oxygen sensor most likely has failed and needs to be replaced.

Roy

Expert:  roy replied 1 year ago.

how are you making out

Expert:  roy replied 1 year ago.

how are you making out???

please dont forget to rate me as it is the only way I get paid for my efforts

Roy

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