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Where is the location Lexus LS 470 P0051 oxygen sensor AF heater bank 2?
Wiki User
∙ 9y ago
HO2S (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1)
Passengers side, before the catalytic converter.
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 2 sensor 1, O2 sensor
Replace PCM if circuit has failed and no wiring issues present, good O2 sensor
Wiki User
∙ 9y ago
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