2008 997.1 C4S manual - multiple errors and misfire 1-4

[JareckiC4S]

Hi

New member, long time visitor for help and info.

This time I need some extra help.

After installing aftermarket front bumper with led lights I was getting the lights errors but after installing resistors it went away.

(I don't think bumper has anything to do with what is going on now ???? )

Suddenly on my way home from work - check engine and misfire. 

 

DME Control System - P0300 misfiring, checksum error - P0301 misfiring, cylinder-1 - P0304 misfiring cylinder-4

PSM Control System - 5400 Fault sport mode - 4444 Steering-angle sensor not initialized

Gateway Control System - 8007 implausible signal - Gateway incorrect coding

PCM2_MMI Control System - 8007 Wake-up line faulty

Chronometer Control System - C112 No signal / communication - Faulty, display CAN

Driver Door Control System - 8003 Lower limit value exceeded - Door entry light

Front Control System - 8021 No signal / communication - Front luggage compartment light  C140 No signal / communication - communication instrument cluster display.

PASM Control System - 000B - Control unit faulty - C203 Fault, steering wheel electronics control unit - drive

Passenger Door Control System - 8003 Lower limit value exceeded - Door entry light

PCM Control System - C140 Communication instrument cluster - display 

TPM Control System - C131 communication gateway control unit ( CAN comfort ) - C140 Communication instrument cluster - display

VEH. ELECTRICAL SYS. Control System - C140 No signal / communication - Communication instrument cluster - display

 

I noticed multiple C140 codes - ???

Left and right door may be aftermarket led lightbulb

 

After this happened I replaced sparkplugs and coils and installed new battery - still same problem 

 

Any input greatly appreciated. 

[jchapura]

 

Can you temporarily disconnect the new LEDs and see if the error codes are eliminated? New codes might pop up due to the lights being disconnected...

 

 

[JareckiC4S]

I will try tonight to disconnect front bumper harness and door lights.