Question about GMC Denali

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Check engine (outline of engine block) light is on. Had On-Star conduct dianostic and they indicated that trouble codes #P0053 and #P0135 were the problem. What does these codes mean and how serious and costly is the problem?

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  • P0053 HO2S Heater Resistance (Bank 1, Sensor 1)
  • P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
  • Possible Solutions
    • Repair short or open or high resistance in wiring harness or harness connectors
    • Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)

    What this means is that the first O2 sensor either has a fault inside of itself or the wire has been damaged. Have the vehicle inspected and quite possibly the O2 sensor replaced. This can create poor fuel economy and long term damage if not addressed. The part can run somewhere between $75 (for an aftermarket replacement such as Bosch which is very good) - $150 for a dealer replacement plus labor. Quite a minor repair but does need to be done. If you wish to tackle this yourself, let me know.

    Posted on May 22, 2011

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    99 percent of the time it is the oxygen sensor.disconnect the sensor and check for b+ voltage at the connector if you have voltage it is your oxygen sensor.it is the first sensor in the exhaust pipe on the drivers side

    Posted on May 22, 2011

    • Terry Long May 22, 2011

      the sensor is not real expensive.good luck.

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    1 Answer

    06 Chevy Silverado code p0053 and p0135


    DTC P0053 HO2S Heater Resistance Bank 1 Sensor 1
    • DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
    Important: Whenever the heated oxygen sensor (HO2S) heaters are commanded ON with a scan tool, they will continue to be pulsed ON once per second until the ignition is turned OFF for 30 seconds.
    Turn ON the ignition, with the engine OFF.
    Command the HO2S heaters ON with a scan tool.
    Wait 15 seconds to allow the HO2S heater current to stabilize.
    Observe the affected HO2S Heater Current parameter with a scan tool.
    Is the HO2S Heater Current parameter within the specified range?
    0.25-1.375 A

    Sep 10, 2016 | 2006 Chevrolet Silverado

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    Trouble code p0134, p0135 p0053 p0030


    P0134 - O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1
    P0135 - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1
    P0053 - O2 Heater Resistance Bank 1 Sensor 1
    P0030 - O2 Heater Control Circuit Bank 1 Sensor 1
    You need to replace the O2 Sensor Bank 1 Sensor 1
    Carquest can help you get the correct part and help you locate it.

    Apr 01, 2014 | 2006 GMC Envoy Xl

    1 Answer

    What's wrong with my 1995 Toyota Avalon with Codes P0135 and P0773?


    P0135 indicates that the heated oxygen sensor 1 on bank 1 is not functioning properly.

    P0773
    This is the torque converter lockup solenoid. Is the converter locking up? The solenoid can be accessed by removing the trans oil pan. Coil resistance is 10.16.9 ohm, check to see if the solenoid operates when 12DC is applied.

    Can also be the wiring to the solenoid from ECU.

    Jun 01, 2012 | 1995 Toyota Avalon

    1 Answer

    Check engine light on- auto zone scanner shows error code p0053 probable cause: 1.-check circuit fuse 2.-relay defective 3.-check circuit wiring Where are fuse and relay located?


    The code P0053 is for your Bank 1 Oxygen Sensor, the closest Oxygen Sensor to the engine, connected to the Exhaust. Replace your Oxygen Sensor, clear the code, and see if it comes back.

    Mar 12, 2011 | Chevrolet Suburban 1500 Cars & Trucks

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    Diagnostic code p0135


    What engine is in this vehicle? I assume the avalon would be a 3.0L or similar V6 engine. Bank 1 sensor one indicates one of the primary O 2 sensor controlling a/f ratio. Sensor one bank one would be the sensor located in the Front manifold, closest to the engine. Hope this solves your issue. I would first check the conector at this sensor for corrison before buying a new sensor.

    Sep 29, 2008 | 1996 Toyota Avalon

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