P0155 1999 Ford F150 -

Question

JUST CHANGED BOTH UPSTREAM AND DOWN STREAM SENSORS and CAMSHAFT SENSOR. NOW SHOWING MORE CODES. NEED HELP PLEASE. TRUCK STARTS AND RUNS FINE!

CODES p0155 p0135 p0340 p0171 p1409

Answer 1

P0135 H02S Sensor circuit malfunction Bank 1 Sensor 1

P0155 H02S Sensor circuit malfunction Bank 1 Sensor 2

P0340 Camshaft position sensor circuit malfunction

P0171 Fuel trim lean Bank 1

To get P0340 this is where the camshaft position sensor signal is no longer detected.Vacuum leak can set P0171 causing the 02 sensor to code . It also possible the 2 oxygen sensor are  sensor are crossed.