OBD II Fault Code P0135 :

Description of Fault code P0135

A/F SENSOR HEATER CIRCUIT MALFUNCTION

Possible failuer P0135

• A/F sensor heater harness open, short to ground or short to power.
• A/F sensor heater relay malfunction.
• A/F sensor heater fuse blowout.
• A/F sensor malfunction.

Diagnostic Procedure using AutoHex II Scan Tool

• A/F sensor heater driver detect open circuit, short to ground, short to power or driver overheat during predetermined duration.

Test Conditions using AutoHex tester

• Engine running.
• BATTERY voltage ≥ 10.5V

Clear Fault codes Conditions

• A/F sensor heater driver detect open circuit, short to ground, short to power or driver overheat during predetermined duration.

MIL Status

• Check Engine Light ON

Note:

• AutoHex II is a professional Auto diagnostic.
• This fault code is a GERENRIC fault code, some cars may change the meaning of this fault code.
  To get the accurate fault code description you may use AutoHex II

More Fault codes: