OBD II-Codes

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

OBD II-codes	Fault message	Volvo on-board diagnostic (OBD) system diagnostic trouble code (DTC)
P0500	SP open	AT-232*
P0600	ECM communication malfunction	AT-511*
P0600	ECM communication malfunction	AT-522*
P0600	ECM communication malfunction	AT-523*
P0600	ECM communication malfunction	AT-524*
P0600	ECM communication malfunction	AT-525*
P0600	ECM communication malfunction	AT-526*
P0600	ECM communication malfunction	AT-527*
P0601	TCM ROM checksum error	AT-412*
P0705	Gear selector fault	AT-313*
P0715	NC open	AT-311*
P0731	Gear ratio fault 1. gear	AT-321*
P0732	Gear ratio fault 2. gear	AT-322*
P0733	Gear ratio fault 3. gear	AT-323*
P0734	Gear ratio fault 4. gear	AT-324*
P0740	Lockup slipping	AT-341*
P0740	Lockup solenoid SL, short-circuit to B+	AT-331*
P0740	Lockup solenoid SL, open circuit	AT-332*
P0740	Lockup solenoid SL, short-circuit to Gnd	AT-333*
P0745	Solenoid STH, signal line short-circuit to B+	AT-123*
P0745	Solenoid STH, driver shorted	AT-132
P0745	Solenoid STH, signal line short-circuit to Gnd or open circuit	AT-131*
P0750	Shift solenoid S1, short-circuit to B+ or open circuit	AT-122*
P0750	Shift solenoid S1, short to Gnd	AT-121*
P0755	Shift solenoid S2, short-circuit to B+ or open circuit	AT-222*
P0755	Shift solenoid S2, short to Gnd	AT-221*

*Activates malfunction indicator lamp (MIL).