Engine Controls - Low Turbo Boost/MIL ON/DTC 275C

NO: 28-67
DATE: 04-21-2006
M. YEAR: 2006
MODEL: S60, S80, V70, XC7O, XC9O (only turbocharged engines type 59, 54, 52)
CHASSIS: S60 500000-552807, S80 426000-446916, V70 530000-591765, XC70 208000-239197, XC90 224000-298326.
SUBJECT:
DTC 275C - Engine coolant Temperature sensor (ECT) signal too high
REFERENCE: VIDA

This Tech Note supersedes the previous 28-67 dated 3-10-06. Please update your files.

DESCRIPTION:
DTC 275C "Engine Coolant Temperature Sensor Signal Too High" may be wrongly triggered in any of the above vehicles, under the following driving conditions:

1. Vehicle driven short distance after cold start.

2. Engine turned off for short time, and then re-started while still warm.

DTC 275C will result in the following:

1. Check engine lamp illumination

2. Temperature gauge will read zero

3. Turbo boost will be limited.





If the Engine Control Module (ECM) software part number is one of the following:

Upgrade the ECM software as described below. If the ECM software part number is anything other than one of the above, the upgrade has already been applied. Fault trace the DTC per VIDA.

SERVICE:
If the engine management system software is one of the above, upgrade the Engine Management Software using the ECM upgrade option in VIDA.

Use software product number 30677021 (ECM Upgrade).





WARRANTY CLAIM INFORMATION