- May 16, 2018
- Reaction score
- Centerville, South Dakota
Fault codes for exhaust cam timing (P0365, P0369) continued. I did some research and the only thing that I believe it could be is that the timing belt was stretched enough to cause the faults to be flagged.I have been chasing a couple of fault codes on my 2015 Ford Fiesta and I believe that I have discovered the problem:
This harness is for the downstream oxygen sensor, tucked behind a metal bracket on the back of the engine. I have replaced both oxygen sensors, cam positioning sensors and both variable valve timing solenoids. The car has 104k on the clock and ran like a top before getting the codes.
I will splice in a short extension for the 4 wires.
View attachment 545169
I had replaced both variable timing solenoids, cm and crankshaft position sensors, with no joy.
I had to drain the transaxle fluid (manual transmission) and I installed a drain plug as none existed. I had to pull the passenger side axle to get to the bolt where the TDC pin is to be installed.
I dove into replacing the timing belt and after struggling with getting the crankshaft and cams aligned (the harmonic balancer/crankshaft gear are pressure held in place - no keyway), I got the engine fired and no fault codes! I didn’t run it long, as I don’t have the alternator mounted, cover installed, passenger side driveshaft, and other sundry items installed, but it started and ran well.
I’ll button it up on Monday.