P0141 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-24-2009, 10:55 AM   #1
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Default P0141

P0141

Description
O2 Sensor Heater Circuit Malfunction

When ignition is turned on, battery voltage is supplied to
HO2S 2 heater to provide for faster sensor warm-up, thus allowing
sensor to become active in a shorter period of time. PCM reads amount
of time necessary for sensor to become active after start-up.

Symptoms
You will likely notice poor fuel economy and/or a Check Engine Light.

Causes
A code P0141 may mean that one or more of the following has happened
  • open or short to ground in the wiring harness
  • O2 heater circuit wiring high resistance
  • O2 heater element resistance is high
  • Internal short or open in the heater element

Possible Solutions
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obd2, obdii, p0141, p141

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