HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
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 2, O2 sensor
Replace PCM if circuit has failed and no wiring issues present, good O2 sensor
HO2S Heater Control Circuit Low (Bank 2 Sensor 2)symptomsOther than the MIL light illuminating you may not notice any performance issues.causeA short in the O2 sensor heater circuit or the sensor itselfA faulty O2 sensor heaterWiring or connectors are broken or frayed to the sensor or relayBad PCM or ECMThe fixCorrect wiring short or loose connector found in inspection.and/orReplace the bank 2 sensor 2, O2 sensorReplace PCM if circuit has failed and no wiring issues present, good O2 sensor
HO2S Heater Control Circuit Low (Bank 2 Sensor 2)symptomsOther than the MIL light illuminating you may not notice any performance issues.causeA short in the O2 sensor heater circuit or the sensor itselfA faulty O2 sensor heaterWiring or connectors are broken or frayed to the sensor or relayBad PCM or ECMThe fixCorrect wiring short or loose connector found in inspection.and/orReplace the bank 2 sensor 2, O2 sensorReplace PCM if circuit has failed and no wiring issues present, good O2 sensor
P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
O2 Sensor Heater Circuit (Bank 1 Sensor 1)
Trouble code P0140 means:O2 sensor circuit no activity detected (Bank 1 Sensor 2)
Trouble code P0340 means: Camshaft Position Sensor A Circuit (Bank 1 or single sensor)
Trouble code P0134 means:O2 sensor circuit no activity detected (Bank 1 Sensor 1)
Trouble code P0142 means:O2 sensor circuit malfunction (Bank 1 Sensor 3)
Trouble code P0156 means:O2 sensor circuit malfunction (Bank 2 Sensor 2)
Trouble code P0134 means:O2 sensor circuit no activity detected (Bank 1 Sensor 1)
Trouble code P0156 means: O2 Circuit (Bank 2, Sensor 2)
it is a generic code o2 heater (circuit bank 1 sensor 2) usually has to do with an oxygen sensor