Heated Oxygen Sensors,OBDII(DTC's)CodesP0134,P0135

A typical oxygen sensor and interpreting an oxygen sensor code

ATTENTION! ATTENTION!!!!! This is mainly for codes P0134 and P0135, or codes that specify no activity or heater circuit malfunction. Codes that show high(rich mixture) or low(lean mixture) volts can be triggered by vacuum/exhaust leaks, misfires, or anything else that is considered a tune up task. ~ $200+ is spent unnecessarily when people misinterpret some oxygen sensor codes and replace catalytic converters instead of checking over all possible causes CAREFULLY.

I am considering that subject matter in a another video not yet posted.
I have started a website at www.mikesautomotive.auto.officelive.com

Category:

Autos & Vehicles

Tags:

• automotive repair
• P0134
• P0135
• check engine light
• bad o2 sensor
• testing o2 sensor

[timboscoops]

Just bought an 01 stratus r/t with Mitsubishi 3.0L, code P0135. Got both 02 sensors replaced and check engine light came on after about 5 minutes of driving. Please help. I dove the car aprox. 40 miles and S.E.S. light is still on. I read somewhere that it will go off after 20-30 full start-ups, or If I disconnect the battery. Thank you in advance for any advice, it is greatly appreciated.

[mss829]

@timboscoops this code is describing the first sensor on the exhaust manifold near the firewall,(harder to reach). I read that you replaced both sensors, but failed to mention if anything was checked as far as getting proper power and ground to that sensor. The heater is usually identified on most sensor as 2 identically colored wires.  One should have 12 volts and the other so have good ground connection. You might check the heater for continuity on your newly replaced sensor just in case.

[timboscoops]

@mss829 ty ill take a look tomorrow if the rain stops i appreciate the quick response

[mss829]

@timboscoops my pleasure, keep me in touch with your progress! I would like to know what you find out!

[mss829]

sounds good! Are you able to get your hands on another sensor from the same place you got this one and compare the two sensor circuits? If another one shows continuity and your's does not, well, then you have good evidence to replace the sensor.

Also, you need good power going to one wire and ground for the other,

I hope this get you a little further,

thanks for the comment

[mss829]

thanks for the comment

what kind a problem did you have?

[bikr1975]

@ninobebemebarak what year and model is your vehicle?? if you can purchase a cheaper o2 sensor like ones from DENSO, then you may save some bucks. if a garage has to send for that part from their vendors, they will almost screw you on cost!! do research, buy what you need at the cheapest available price and have a small cheap garage do the repair at the cheapest possible. $275 sounds just a wee bit too high. good luck :)

[Tommy717Vaj]

question ... like i have 2 black and one blue and one white... i test the 2 black wire with a ohm meter and it have no reading .. that mean is bad sensor... even your just bought them.. an week ago...

[chevrolet0388]

Excellent video, thank you for the information.

[gxryd3r]

My distributor recently died (no sparks to the engine) and I replaced it with a new distributor. I drove the next day and got Check Engine Light flagging the O2 sensor. I turn the engine off and CEL was gone. Could this be misfiring due to new distributor? I've seen CEL twice for O2 sensor. I'll check the electrical continuity. Thanks for the instruction.