P1152 Diagnostic Trouble Code Discussion for October 2017
Air Fuel Sensor (Bank 1 Sensor 1) Range/Performance (Low)
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| Help Request | Posted | |
| 1998 Ford F-150 XL 4.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 2FTZF1723W P1152: 02 reads rich b2s1. Vehicle runs rich, blows black smoke, b1s1 and b2s1 o2 sensors go up to 800-950mv when closed loop, fuel trim -20, b1 + b2 o2 sensors won't switch so it goes into OFL loop and stops the fuel trim control. The downstream o2 sensors read rich also 600-700mv. I i... |
October 10, 2017 | |
| 1998 Ford F-150 XL 4.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 2FTZF1723W P1152: 02 reads rich b2s1. Vehicle runs rich, blows black smoke, b1s1 and b2s1 o2 sensors go up to 800-950mv when closed loop, fuel trim -20, b1 + b2 o2 sensors won't switch so it goes into OFL loop and stops the fuel trim control. The downstream o2 sensors read rich also 600-700mv. I i... |
October 11, 2017 |
