Diagnostic trouble code (DTC) information
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.
Condition
The engine control module (ECM) and transmission control module (TCM) communicate via a standardized serial interface. Both the control modules transmit and receive information. One of the diagnostic trouble codes (DTC) ECM-DC/DD/DE/E0 is stored if communication is interrupted or ceases.
Substitute Value
- Turbocharger (TC) control disabled
- Ignition retardation.
Possible Source
- Open-circuit in one or both signal cables
- One or both signal cables short-circuited to ground, voltage or each other
- Contact resistance in the terminals
- Defective engine control module (ECM) or transmission control module (TCM).
Fault symptom[s]
- Poor performance
- Harsh gear shifting.