DTC :P0135 O2 sensor heater circuit malfunction bank one sensor one.

Tiny
PARKSTONE
  • MEMBER
  • 1997 JEEP CHEROKEE
  • 200,000 MILES
I brought this truck in for inspection and failed due to the o2 sensors. I have replaced both sensors and now the vehicle is running very rough.

After replacing both malfunctioning sensors I drove it and noticed the the vehicle will not take fuel. I drove it back to the auto store and the computer still shows that both of the sensors are bad. I have no idea what to do next the DTC:p0135 o2 sensor heater circuit malfunction bank one sensor one. DTC: p0141 o2 sensor heater circuit malfunction bank one sensor two. DTC: p0138 o2 circuit high voltage bank one sensor two.
Tuesday, February 21st, 2012 AT 12:31 AM

1 Reply

Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
I would have the convertors tested at a exhaust shop for backpressure. If the exhaust is not flowing correctly the o2 sensors will sense a prob since there is no code for backpressure or restricted exhaust the computer thinks the 02 sensors are failing.

You will get the same codes if you need a major tune up
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Tuesday, February 21st, 2012 AT 12:36 AM

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