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P1151 Diagnostic Trouble Code Discussion for June 2011

Electronic Throttle System Sub Accelerator Position Sensor 2 Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1151
Help Request Posted
1998 Ford Mustang GT 4.6L Surge, MIL Lamp on VIN: 1FAFP45XXW
P1151: Lack of ho2s21 switchingsensor indicates lean. Hey all you ford techs out there i got this mustang that the ecm shows to be running lean. I checked fuel pressure its good, checked cleaned and replaced the maf sensor it shows approx. 7gs on airflow. Tps voltage good coolant sensor reading properly. Smoked f...
June 15, 2011
2002 Mazda Tribute LX 3.0L Misfire, MIL Lamp on VIN: 4F2CUO9910
P1151: Heated Oxygen Sensor (Bank 2 Sensor 1) Indicates A/F Ratio Too Lean. this came in my shop with catalyst blocked,truck don t have power and big knock in the engine with higher rpm. backpressure in catalyst was 6 lbs, replace catalyst , now the knok in the engine is gone , but two misfire ( can t see which one in my genesys) spar...
June 24, 2011
1998 Ford Mustang GT 4.6L Surge, MIL Lamp on VIN: 1FAFP45XXW
P1151: Lack of ho2s21 switchingsensor indicates lean. Hey all you ford techs out there i got this mustang that the ecm shows to be running lean. I checked fuel pressure its good, checked cleaned and replaced the maf sensor it shows approx. 7gs on airflow. Tps voltage good coolant sensor reading properly. Smoked f...
June 15, 2011
2002 Mazda Tribute LX 3.0L Misfire, MIL Lamp on VIN: 4F2CUO9910
P1151: Heated Oxygen Sensor (Bank 2 Sensor 1) Indicates A/F Ratio Too Lean. this came in my shop with catalyst blocked,truck don t have power and big knock in the engine with higher rpm. backpressure in catalyst was 6 lbs, replace catalyst , now the knok in the engine is gone , but two misfire ( can t see which one in my genesys) spar...
June 24, 2011