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2001 Jeep Grand Cherokee Question: What does engine code p152 mean? I have a 2001 Jeep grand cherokee

 

Question

manher78, Freeport, NY, January 20, 2013, 04:22
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Just started this morning, doesn't seem like there is anything wrong, but the check engine light came on.

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  • Answer #1

    mastertech6371 January 20, 2013, 07:18
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     Master

    SYMPTOM
    P0152-2/1 O2 SENSOR SHORTED TO VOLTAGE

    TEST NOTE
    This symptom is diagnosed using the test P0132-1/1 O2 SENSOR SHORTED TO VOLTAGE.

    WHEN MONITORED
    With battery voltage greater than 10.4 volts , engine running for more than 4 minutes and coolant temperature above 180 °F .

    SET CONDITION
    The oxygen sensor voltage is above 1.5 volts .

    POSSIBLE CAUSES
    Intermittent condition
    O2 sensor operation
    O2 sensor signal shorted to voltage
    O2 sensor signal circuit shorted to O2 heater relay output circuit
    O2 sensor signal open
    O2 sensor ground circuit open
    PCM

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