P0059
Powertrain Codes
P0059 - SUZUKI - HO2S21 Heater Control Circuit Low/High/Heater Resistance
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Heated oxygen sensor harness open or shorted - Heated oxygen sensor circuit poor connection - Faulty heated oxygen sensor relay - Faulty heated oxygen sensor - Faulty Engine Control Module (ECM)
When Detected
Heater current requirements too low or high in the heated oxygen sensor (HO2S) heater control circuit