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
Diagnostic trouble code (DTC) ECM-74 is stored if the control module detects that the signal from the throttle position (TP) sensor is too low at high load and high engine speed (RPM).
Substitute Value
The fuel injection system diagnostics are disabled.
Possible Source
- Contact resistance in the terminals
- Defective throttle position (TP) sensor.
Fault symptom[s]
- Transmission slap when applying / lifting off the throttle
- Limited DSA function.