Em1 p0133 keeps appearing
03-16-2014, 11:23 AM
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Em1 p0133 keeps appearing
i have recently replaced my o2 sensor about 3 times this year. the code p0133 would appear here and there annoys the sht outta me. Help please.
03-17-2014, 12:11 PM
#2
Re: Em1 p0133 keeps appearing
Low and behold, the connectors for the front and rear oxygen sensor are identical. The wiring is all bundled up on itself too. I was pulling electrical connectors for cleaning and die-electric grease when the light bulb went off. I had a wiring diagram close by and was able to figure it out almost instantly! A quit revision to which sensor was plugged into what bank of the ECM and the car ran better. I cleared the code, drove home and pulled the battery to re-set the fuel trims.
03-17-2014, 01:19 PM
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03-24-2014, 10:15 AM
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Re: Em1 p0133 keeps appearing
Do not actually touch the piping it gets hot, just hover your hand near it and feel for warm air.
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03-24-2014, 01:48 PM
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Re: Em1 p0133 keeps appearing
IIRC, 99 EM1's had a TSB for an overly sensitive ECU. I ended up replacing my ECU to make mine STFU about the O2 sensor that I repeatedly replaced.
Try a few things first:
-replace your FPR with another known good one or a new one
-check for exhaust leaks
-clean your MAP sensor hole with throttle body cleaner and a paper clip. Be careful. Do the same for the snorkel on the MAP itself also.
Try a few things first:
-replace your FPR with another known good one or a new one
-check for exhaust leaks
-clean your MAP sensor hole with throttle body cleaner and a paper clip. Be careful. Do the same for the snorkel on the MAP itself also.
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