35 DTCs where to start?

algopyguy · Post by **algopyguy** » 26 Oct 2020, 19:37

this is an s60 02 2.4l base non-turbo model.. I picked it p used with a rough idle/hard start issue, which i am still troubleshooting.. Got a VXDIAG and it spit out more codes than i'd like to see.. Car drives/shifts fine, just hard start and rough at idle are what i'm tweaking on now..

I've replaced, MAS, CAM sensor, coils are aftermarket but less than a yr old, checked timing (was fine), new timing belt tensioner, also got a throttlebody from a yard.. so far with all the above still have same symptoms.. with the VXDIAG i was happy to get more in-depth codes, however where to start seems to be my next issue.. Any guidance would be amazing..

S60 - 2002 - B5244S 10/26/2020

DTCs
CEM-5B05 - Left seat heater. Signal too low. Intermittent fault
CEM-1A5D - Communication with the electronic throttle module (ETM). Signal missing
CEM-6F71 - Switch, fuel tank filler cover. Signal too low
CEM-8FA3 - Relay, signal horn. No signal. Intermittent fault
CEM-1C02 - L signal. Signal too low. Intermittent fault
CEM-1A59 - Communication with the audio module (AUM). Signal missing
CEM-1E04 - Communication with the lamp switch module. Signal missing. Intermittent fault
CEM-1A5B - Communication with the steering wheel module (SWM). Signal missing
CEM-3A03 - Fuel pump. Signal too low. Intermittent fault
CEM-1A5F - Communication with ABS control unit. No signal. Intermittent fault
ECM-903F - Throttle position (TP). Signal missing
ECM-620A - Idling speed. High
ECM-913F - Throttle position (TP). Non plausible request
ECM-5000 - A/C pressure sensor. Faulty signal
ECM-310A - Engine speed (RPM) sensor. Faulty signal
BCM-0101 - Communication between control modules. Communication problems with the engine control module (ECM)
DDM-0025 - Door mirror motor. Disconnected
DDM-0001 - Power window lift motor M+ or M-. Signal too high
DDM-E003 - Configuration fault. Faulty communication
PDM-003E - Control module. Signal too high
PDM-E003 - Configuration fault. Faulty communication
PDM-0025 - Door mirror motor. Disconnected
CCM-001E - Right Temperature knob. Faulty signal
CCM-001A - Blower fan knob. Faulty signal
CCM-001D - Left temperature knob. Faulty signal
CCM-0004 - Compressor. Faulty signal
CCM-0017 - Damper motor direction control. Signal too low
SRS-00D5 - Side impact sensor, left rear. Signal too low
UEM-0004 - Siren. Communication fault
UEM-0005 - Sun roof. Communication fault
SWM-0003 - High beam flash Activated too long. Permanent fault
SWM-E003 - Configuration fault. Faulty configuration
PSM-E003 - Configuration fault. Faulty communication
AUM-41FF - Amplifier, sub-antenna. Signal missing. Intermittent fault

Post by **RickHaleParker** » 26 Oct 2020, 20:10

Start by clearing all the DTCs and see what comes back. Some of them maybe artifacts from hiccups or problems long gone. Such as a weak battery that has been replaced.

algopyguy · Post by **algopyguy** » 27 Oct 2020, 07:06

This was after I reset DTC codes.. Battery when put on charger was 12.3v @ 98% charged..

Post by **RickHaleParker** » 28 Oct 2020, 00:00

algopyguy wrote: ↑27 Oct 2020, 07:06 This was after I reset DTC codes.. Battery when put on charger was 12.3v @ 98% charged..

12.3V is about 50% charged. 100% is about 12.7V after a 30 minute rest. Low voltage can produce all kinds of false DCTs.

Post by **vtl** » 28 Oct 2020, 06:15

These are inactive (past) codes. Engine won't start with some of them in active state, like ECM-310A. Can your tool show only active codes?

Most of the codes are from low voltage.

algopyguy · Post by **algopyguy** » 31 Oct 2020, 15:29

Just charged battery.. Sat for about 2 hrs and shows 13.09v.. Ill clear dtcs and rescan...

Post by **RickHaleParker** » 31 Oct 2020, 16:46

algopyguy wrote: ↑31 Oct 2020, 15:29 Just charged battery.. Sat for about 2 hrs and shows 13.09v

The electrolyte is stratified in terms of concentration. That is why it 13.09V. Deep discharges will do that. If you keep it on a charger it will work itself out.