P1151 - Lack Of Ho2S-21 Switch, Sensor Indicates Lean

2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION P1151 - Lack Of Ho2S-21 Switch, Sensor Indicates Lean
P1151 - LACK OF HO2S-21 SWITCH, SENSOR INDICATES LEAN

Description:  A Heated Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
Possible Causes:  See the possible causes for DTC P1130.
Diagnostic Aids:  -
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
Dedicated NGV - GO to HA: Natural Gas Fuel Control STEP 9 GO to HA: Natural Gas Fuel Control STEP 9
All others - GO to H: Fuel Control STEP 17 GO to H: Fuel Control STEP 17
RENDER: 1.0x

NO RELATED

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