Home >> Volvo >> 2003 >> S40 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Dynamic Stability Assist (DSA) & Electronic Control Module (ECM) Diagnostic Trouble Codes (644 Body) >> DSA-231: Throttle Position (TP) Sensor Signal. Signal Missing. Permanent Fault (B4204T3; 2004) >> Signal missing. Permanent fault