Code : P1121
Make : 1997_FORD_F150
Description : P1121 1997 FORD F150 Throttle Position Sensor Inconsistent with Mass Air Flow Sensor
Possible causes :
– Air leak between Mass Air Flow sensor and throttle body
– Faulty Throttle Position Sensor
– Throttle Position Sensor harness is open or shorted
– Throttle Position Sensor circuit poor electrical connection
– Damaged Mass Air Flow sensor
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
