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P0135 - O2 Heater Circuit (Bank 1, Sensor 1) - DTC Chart

P0135 - O2 HEATER CIRCUIT (BANK 1, SENSOR 1) - DTC CHART

Description:  This DTC sets when an open or short circuit is detected or the universal heated oxygen sensor bank 1, sensor 1 (HO2S11) heater current draw exceeds a calibrated limit.
Possible Causes: 
  • UO2SHTR11 circuit open
  • UO2SHTR11 circuit short to voltage
  • VPWR circuit open
  • Low battery voltage
  • Water in the harness connector
  • Corrosion
  • Incorrect connections
  • Damaged universal HO2S11 heater
Diagnostic Aids:  Inspect the connectors for signs of damage, water intrusion or corrosion.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DZ .
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