| DTC (SAE) 
 
 | Malfunction/faulty component 
 
 | CHECK
ENGINE 
 
 | ISAT Scan Tool
display text 
 
 | Action, see
page 
 
 | 
      
       | P0123 
 
 | Throttle position sensor. Control
module input shorting to battery positive (B+) or open circuit. 
 
 | on 
 
 | FAULT XX P0123 
 THROTTLE POSITION
 
 OPEN CIRCUIT SHORT TO B+
 
 
 |   
 
 | 
      
       | P0125 
 
 | Engine coolant temperature sensor.
Insufficient temperature increase. 
 
 | on 
 
 | FAULT XX P0125 
 COOLANT TEMP
 
 TEMP. INCREASE SLOW
 
 
 |   
 
 | 
      
       | P0130 
 
 | Front heated oxygen sensor. All-
embracing diagnostic trouble code for oxygen sensor operation. 
 
 | on 
 
 | FAULT XX P0130 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 1)
 
 FUNCTION INCORRECT
 
 
 |   
 
 | 
      
       | P0132 
 
 | Front heated oxygen sensor. Shorting
to battery positive (B+). 
 
 | on 
 
 | FAULT XX P0132 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 1)
 
 KORTSL.B+
 
 
 |   
 
 | 
      
       | P0133 
 
 | Front heated oxygen sensor. Poor
response to change in fuel-air mixture. 
 
 | on 
 
 | FAULT XX P0133 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 1)
 
 LOW FREQUENCY
 
 
 |   
 
 | 
      
       | P0135 
 
 | Heating, front heated oxygen sensor.
Current outside limits. 
 
 | on 
 
 | FAULT XX P0135 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 1)
 
 NO PREHEATING
 
 
 |   
 
 | 
      
       | P0136 
 
 | Rear heated oxygen sensor. All-
embracing diagnostic trouble code for oxygen sensor operation. 
 
 | on 
 
 | FAULT XX P0136 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 2)
 
 FUNCTION INCORRECT
 
 
 |   
 
 | 
      
       | P0138 
 
 | Rear heated oxygen sensor. Shorting to
battery positive (B+). 
 
 | on 
 
 | FAULT XX P0138 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 2)
 
 KORTSL.B+
 
 
 |   
 
 | 
      
       | P0140 
 
 | Rear heated oxygen sensor. Shorting to
ground or open circuit. 
 
 | on 
 
 | FAULT XX P0140 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 2)
 
 BREAK/SHORT GROUND
 
 
 |   
 
 | 
      
       | P0141 
 
 | Heating, rear heated oxygen sensor.
Current outside limits. 
 
 | on 
 
 | FAULT XX P0141 
 FRONT HEATED OXYGEN SENSOR (oxygen sensor 2)
 
 NO PREHEATING
 
 
 |   
 
 | 
      
       | P0170 
 
 | Adaptation. All-embracing diagnostic
trouble code for the adaptation function. 
 
 | on 
 
 | FAULT XX P0170 
 ADAPTATION
 
 FUNCTION INCORRECT
 
 
 |   
 
 | 
      
       | P0171 
 
 | Adaptation. Lean
mixture 
 
 | on 
 
 | FAULT XX P0171 
 ADAPTION
 
 LEAN
 
 
 |   
 
 | 
      
       | P0172 
 
 | Adaptation. Rich
mixture. 
 
 | on 
 
 | FAULT XX P0172 
 ADAPTION
 
 RICH
 
 
 |   
 
 | 
      
       | P0300 
 
 | Misfiring, randomly in several cylinders 
 
 | on 
 
 | FAULT XX P0300 
 RANDOM MISFIRE
 
 
 |   
 
 |