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Bought 2013 Panamera Turbo S in non running condition, airbags not blown. Pyro Fuse still normal according to system scan. This isn't my first major Panamera repair, wont be my last. Engine was locked up. Sourced a used takeout VIN C engine with its own harness, have swapped and installed.
I have no backstory on the car. Don't know what caused the previous failure, or its history. The oil and sludge in the pan was intriguing though.
Now to the problem, All scanning done with a Launch X431
The car cranks, but has no spark.
After cranking, DME reports P0344 and P0349 (Limit Value Exceeded), Bank 1 & 2 intake cam sensor codes. Can clear, crank again and they return. Have verified 12v input and ground at both connectors. Have also traced both signal wires back to DME and verified continuity. Had 2 extra cam sensors from old motor that also produce the same codes. No crank sensor code, but have also verified 5v and ground at CPS connector.
I do not currently have an oscilloscope to check any of the 4 cam sensor outputs. Highly unlikely 4 bad sensors I would think.
Those 2 codes could possibly be enough to cause no spark I guess?
I also believe I've checked all fuses.
Honestly after cranking on it a bit and then pulling a plug or 2, there is no fuel smell or wetness on the plugs. I know I've got fuel pressure to the rail, and while setting with just the key on and pump primed its showing 80+psi. I've had another before with a bad HPFP, but it would still run off just the lift pump pressure.
Possible lack of fuel and no spark makes me thinking antitheft/immobilizer. Key has a new battery and lock, unlocks and functions correctly .
Ground strap from engine to chassis has been cleaned and double checked. Also ground under the DME on the bottom side of the fender well has been checked and cleaned. I've seen missing/bad ground cause crazy problems before, so If i left one off somehow, it wouldn't be surprising.
I'm not convinced its coding, but there's no telling with not knowing the cars history.
While scanning, looking for something that stuck out at me in anything related to the antitheft unit. Also looked through the rear module values. I'm not seeing anything.
I'm using a Launch X431 which has some coding and actuator features. When in the DME I can not seem to get any of the actuator tests to run. Even simple things like turning the radiator fans on... Any camshaft actuation command fails also.
I can however get something as simple as the driver door window to go up and down when logged into the driver door module and sending commands. Same with the level control, it will self test and perform other functions.
However, the manual states...
Following replacement of the high-pressure pump and engine, the values for the high-pressure adaptation must be reset using the PIWIS Tester. Then carry out a test and adaptation drive.
Read the information in the section → 247019 REMOVING AND INSTALLING DME CONTROL UNIT
The current software must be installed on the control unit if necessary. Following conversion to a new engine, it is possible that an old software version may still be installed on the control unit
