Trailer hitch fault overview

WARNING: This page is about a different car, the 2006 Porsche Cayenne, 2005 Porsche Cayenne, 2004 Porsche Cayenne, and 2003 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Electric circuits not present on every trailer, such as fog lights or reversing lights, are not monitored for open circuit.
(NAR) - North America

TRAILER HITCH FAULT OVERVIEW

Fault code	Fault text	Fault effects
0003	Control unit faulty	Brake light signal is switched through directly
0335 (NAR)	Tail light, trailer (NAR only)	-
0455	KESSY control unit (CAN comfort)	Terminal 15 implausible
0457	Vehicle electrical system control unit (CAN comfort)	Limited function
0526	Brake light switch	-
0532	Supply voltage	-
0576	Terminal 15	-
1042	Control unit not coded	-No function
1299	Gateway	Limited function
1336	CAN comfort OFF	Trailer tail light is switched on, brake light signal is switched through directly
1507	Initialization not successful	Trailer hitch has no pivoting function Operating button function light flashes (approx. 4 Hz)
2231	Brake actuated signal (PSM)	-
2539	Power supply, trailer	No terminal 30 power supply to pin 9 of trailer socket
2562	Brake light, trailer	No brake light on trailer (in the event of an open circuit and short circuit to ground) or continuous brake light on trailer (in the event of a short circuit to B+)
2563	Right tail light, trailer	No right tail light or continuous right tail light on trailer (in North America: right and left)
2564	Left tail light, trailer	No left tail light or continuous left tail light on trailer (in North America: left and right)
2565	Right direction indicator light, trailer	No right direction indicator light or continuous right direction indicator light on trailer (in North America: right and left)
2566	Left direction indicator light, trailer	No left direction indicator light or continuous left direction indicator light on trailer (in North America: left and right)
2567	Rear fog light, trailer	No rear fog light or continuous fog light, trailer
2568	Reverse light, trailer	No rear reverse light or continuous reverse light, trailer
2577 (NAR)	Activation electrical brakes, trailer. (retrofit only NAR, North America)	Activation of electrical brakes disturbed, no or continuous braking
2579 (NAR)	Left brake light, trailer. (retrofit only NAR, North America)	No brake light or continuous brake light, left, on trailer
2580 (NAR)	Right brake light, trailer. (retrofit only NAR, North America)	No brake light or continuous brake light, right, on trailer
2588	Pivoting towbar not OK	Automatic operation of trailer hitch interrupted Motorized pivoting of trailer hitch no longer possible