Oxygen Sensor Help code P0135
#1
Oxygen Sensor Help code P0135
I have a 2003 Chevy silverado and got an error code reading Bank 1 Sensor 1 Faulty. Replaced Upstream sensor and still getting same code. Checked all fuses they are fine truck sounds fine but gas mileage has fallen off any suggestions would be great!
#2
CF Monarch
My Haynes says heater performance left bank. If the connector is clean, and solid, try another sensor, or if possible swap the two left/right if the problem follows then it is the sensor, if not wiring. New parts dosen't always equal good parts.
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Rednucleus (November 5th, 2019)
#4
2001 Chevy Silverado 1500 5.3l
I plugged in Obd2 code reader & got these codes P0135 (02 sensor heater circuit malfunction bank 1sensor 1), P0171 & P0174 ( System too lean bank 1&2), P0300 Random/multiple Cylinder Misfire Detected. II don't have a clue where any of it is or how to replace them. Please help
#5
I have an 05 Trailblazer that is running rough. ROMs going crazy. Acts like stuck in neutral. Can get it to go to 3rd gear. Then have to let off gas reduce speed and it shifts to next gear. Computer gave codes for 02 sensor fuse, cylinder 4 misfiring, low coolant temp and air register issue. Fuse looks good. Didn't know what to do for last 2 so changed cylinder 4 coil and plug. ( never been changed- I know I shoulda done all!!))
also plug had some oil on it. This fixed the issue for about 10-15 mins then it started again. Never got as bad as 1st time, could actually go 55 mph but still had RPM whining sound. If anybody has any suggestions, all are welcome and appreciated. !!
also plug had some oil on it. This fixed the issue for about 10-15 mins then it started again. Never got as bad as 1st time, could actually go 55 mph but still had RPM whining sound. If anybody has any suggestions, all are welcome and appreciated. !!
#6
Problems?
I plugged in Obd2 code reader & got these codes P0135 (02 sensor heater circuit malfunction bank 1sensor 1), P0171 & P0174 ( System too lean bank 1&2), P0300 Random/multiple Cylinder Misfire Detected. II don't have a clue where any of it is or how to replace them. Please help
#7
I have an 05 Trailblazer that is running rough. ROMs going crazy. Acts like stuck in neutral. Can get it to go to 3rd gear. Then have to let off gas reduce speed and it shifts to next gear. Computer gave codes for 02 sensor fuse, cylinder 4 misfiring, low coolant temp and air register issue. Fuse looks good. Didn't know what to do for last 2 so changed cylinder 4 coil and plug. ( never been changed- I know I shoulda done all!!))
also plug had some oil on it. This fixed the issue for about 10-15 mins then it started again. Never got as bad as 1st time, could actually go 55 mph but still had RPM whining sound. If anybody has any suggestions, all are welcome and appreciated. !!
also plug had some oil on it. This fixed the issue for about 10-15 mins then it started again. Never got as bad as 1st time, could actually go 55 mph but still had RPM whining sound. If anybody has any suggestions, all are welcome and appreciated. !!
I know this is a very old post but as I read it. I thought maybe I had already written in. This is exactly my problems.
Just wandering how your situation turned out or if anyone has any new solutions or input. Thanks in advance.
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Z71Grl08
Silverado & Fullsize Pick-ups
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August 2nd, 2011 8:12 PM