Engine Control Module (ECM) DTC FFFF (TJ 27341)

Publication date: 2013-02-08
Reference number: TJ 27341

ENGINE CONTROL MODULE (ECM) DTC FFFF

TECHNICAL SERVICE BULLETIN

Reference Number(s): TJ27341, Date of Issue: February 08, 2013

VOLVO:	2006-2006 S80, XC90, V70, V70, V70; 2006-2006 V70; 2006-2007 V70, V70, V70, XC70; 2006-2006 S60, S60, S60; 2007-2007 C30; 2006-2007 C70, S40, V50
SECTION:	Ignition and Control System
GROUP:	2800
NO.:
RELATED REF. NUMBER(S):	TJ27341

ATTACHMENT

VEHICLE TYPE

Type	Eng	Eng Desc	Model Year	Plant	Chassis range	Struc Week Range
184	59	B5254T2	2006-2006	21	0426000-0446916	200520-200606
275	59	B5254T2	2006-2006	21	0224000-0328000	200520-200619
285	52	B5254T4	2006-2007		0530000-0676000	200520-20071
285	54	B5244T5	2006-2007	21	0530000-0673859	200520-200719
285	54	B5244T5	2006-2007	22	0530000-0676000	200520-200719
285	59	B5254T2	2006-2006	21	0530000-0617000	200520-200619
285	59	B5254T2	2006-2007	21	0530000-0673859	200520-200719
285	59	B5254T2	2006-2007	21	0530000-0673859	200520-200719
285	59	B5254T2	2006-2007	22	0530000-0676000	200520-200719
295	59	B5254T2	2006-2007	21	0208000-0288671	200520-200719
384	52	B5254T4	2006-2006	22	0500000-0600000	200520-200619
384	54	B5244T5	2006-2006	22	0500000-0600000	200520-200619
384	59	B5254T2	2006-2006	22	0500000-0600000	200520-200619
533	68	B5254T3	2007-2007	22	0000261-0039000	200637-200719
542	68	B5254T3	2006-2007	38	0000590-0040000	200540-200719
544	68	B5254T3	2006-2007	22	0150000-0350000	200520-200719
545	68	B5254T3	2006-2007	22	0150000-0367000	200520-200719

CSC CUSTOMER SYMPTOM CODES

CODE DESCRIPTION - CSC

Code	Description
DL	Warning lights and chimes/Malfunction Indicator Light ("check engine" light) indication/no indication
2V	Technician information/Software/Vehicle communication/Not for warranty use

DTC

Diagnostic Trouble Codes

DTC DESCRIPTION

Control Module	Code	Fault Type
ECM	FFFF	Permanent

TEXT

NOTE: If using a printed copy of this Technical Journal, first check for the latest online version.

NOTE: THIS DOCUMENT SUPERSEDES THE PREVIOUS TECHNICAL JOURNAL 27341 DATED 2013-02-01. CSC (DL) added. PLEASE UPDATE YOUR FILES.

DESCRIPTION

Malfunction Indicator Light (MIL) may be lit without any DTC posted or ECM DTC FFFF posted.

A customer may complain about:

Hard to start.
Driveability complaints due to wrong information to ECM.
No temperature indication / wrong temperature indication in Driver Information Module (DIM)
Maximum AC cooling at cold ambient temperature.

The root cause is a bug in the ECM Software (SW). If the signal from the Temperature-Manifold Absolute Pressure (T-MAP) shows a constant value, approx. +60degC, ECM should post DTC 133C, "Intake air temperature sensor inlet" ("T-MAP").

Instead, DTC FFFF is set or no DTC is set, but the MIL is on. This will lead to improper diagnosis.

PRODUCT MODIFICATION

ECM SW is corrected from MY 2008. The purpose of the SW is to make sure the ECM sets the correct DTC in the event of the conditions above. The SW is not meant to repair an actual fault in the vehicle.

SERVICE

DO NOT TRY TO DOWNLOAD ECM UPGRADE AS AN ATTEMPT TO REMEDY THIS DTC.

If FFFF is set in the ECM, fault trace according to VIDA for ECM DTC 133C and remedy as necessary.