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I Just went to AutoZone and had this same error code. It says Definition:Oxygen sensor heater control circuit low-Bank 1-H02S11 Probable Causes: 1. H02S11 heater circuit open or shorted 2. Failed H02S11 02 Sensor problem

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17y ago

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Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

symptoms
Other than the MIL light illuminating you may not notice any performance issues.

cause
A short in the O2 sensor heater circuit or the sensor itself
A faulty O2 sensor heater
Wiring or connectors are broken or frayed to the sensor or relay
Bad PCM or ECM

The fix
Correct wiring short or loose connector found in inspection.
and/or
Replace the bank 1 sensor 1 O2 sensor


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10y ago
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