I recently purchased a 2003 Expedition Eddie Bauer, 5.4. Quite the project truck, but I’ve been meticulously working through the write-ups to get her safe and reliable for an airport car.
The remaining DTCs have me stumped, figured I would ask the collective group, to maybe point me in the right direction. The codes as are as follows:
U1073 - Invalid or missing data for engine coolant from (PCM)
C1233 - Left front wheel speed sensor input signal missing
B1676 - Battery voltage out of range
C1155 - Left front wheel speed sensor input circuit failure
What I have done so far related to ABS:
- replaced the battery - it was due regardless
- replaced the left front bearing and wheel speed sensor. The left front inexplicably turned into a smoke show, so I initially thought bearing. While the wheel was in the air, the bearing tested ok with my hands at the 12 and 6 o’clock, but it was a $49 eBay special that was on there, so I went back together with Napa’s top shelf bearing and WSS.
- inspected the harness to the ABS module, and it appears sound, with no corrosion or damage at the harness connection
Not sure what to do next. I’m hoping the ABS module itself is not bad, as that’s an expensive and elusive module to source. And an expensive mistake if that’s not the problem.
The build date on the Expedition is 02/03, which happens to be THE cutoff month for several other parts I’ve had to source for the truck.
Any ideas next steps in troubleshooting? Thanks fellas!
Pete
The remaining DTCs have me stumped, figured I would ask the collective group, to maybe point me in the right direction. The codes as are as follows:
U1073 - Invalid or missing data for engine coolant from (PCM)
C1233 - Left front wheel speed sensor input signal missing
B1676 - Battery voltage out of range
C1155 - Left front wheel speed sensor input circuit failure
What I have done so far related to ABS:
- replaced the battery - it was due regardless
- replaced the left front bearing and wheel speed sensor. The left front inexplicably turned into a smoke show, so I initially thought bearing. While the wheel was in the air, the bearing tested ok with my hands at the 12 and 6 o’clock, but it was a $49 eBay special that was on there, so I went back together with Napa’s top shelf bearing and WSS.
- inspected the harness to the ABS module, and it appears sound, with no corrosion or damage at the harness connection
Not sure what to do next. I’m hoping the ABS module itself is not bad, as that’s an expensive and elusive module to source. And an expensive mistake if that’s not the problem.
The build date on the Expedition is 02/03, which happens to be THE cutoff month for several other parts I’ve had to source for the truck.
Any ideas next steps in troubleshooting? Thanks fellas!
Pete