Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Volvo V40 BaseFACTORY OEM SERVICE PROCEDURE
Dynamic Stability Assist (DSA) DTCS
DYNAMIC STABILITY ASSIST (DSA) - DTC INDEX
| DTC | Description |
|---|---|
| DSA-112 | Control Module. EEPROM memory fault (B4204T4) |
| DSA-121 | DSA switch. Signal too low (B4204T4) |
| DSA-122 | DSA warning lamp. Faulty signal. Intermittent fault (B4204T4) |
| DSA-122 | DSA warning lamp. Faulty signal. Permanent fault (B4204T4) |
| DSA-131 | Torque reduction signal. Faulty signal. Intermittent fault (B4204T4) |
| DSA-131 | Torque reduction signal. Faulty signal. Permanent fault (B4204T4) |
| DSA-211 | Stop (brake) lamp switch. Signal too high (B4204T4) |
| DSA-212 | Stop (brake) lamp switch. Faulty signal. Intermittent fault (B4204T4) |
| DSA-212 | Stop (brake) lamp switch. Faulty signal. Permanent fault (B4204T4) |
| DSA-221 | Load signal. Signal missing. Intermittent fault (B4204T4) |
| DSA-221 | Load signal. Signal missing. Permanent fault (B4204T4) |
| DSA-222 | Load signal. Faulty signal (B4204T4) |
| DSA-223 | Engine control module (ECM) initialization. Faulty signal (B4204T4) |
| DSA-224 | Engine control module (ECM). Diagnostic trouble code (DTC) stored in the engine control module (ECM) (B4204T4) |
| DSA-231 | Throttle position (TP) sensor signal. Signal missing. Intermittent fault (B4204T4) |
| DSA-231 | Throttle position (TP) sensor signal. Signal missing. Permanent fault (B4204T4) |
| DSA-232 | Throttle position (TP) sensor signal. Faulty signal (B4204T4) |
| DSA-233 | Engine control module (ECM). Diagnostic trouble code (DTC) stored in the engine control module (ECM) (B4204T4) |
| DSA-311 | Wheel speed signal, left front wheel. Faulty signal (B4204T4) |
| DSA-312 | Wheel speed signal, right front wheel. Faulty signal (B4204T4) |
| DSA-313 | Wheel speed signal, left rear wheel. Faulty signal (B4204T4) |
| DSA-314 | Wheel speed signal, right rear wheel. Faulty signal (B4204T4) |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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