HI. I am helping out a friend who has a 2010 335d. The engine runs smooth (never in "limp mode") but the amber engine lights comes on at times (inconsistent and not frequent) so he had it coded and the OBD provided code p02d5. Any ideas on what we should check that may be causing this? He recently changed the glow plugs and glow plug module. Thank you.
From the P code he may need to replace cylinder 5 injector. They can cause a fault without drive ability issues.
