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
Immobilizer Module (IMM) DTCS
IMMOBILIZER MODULE (IMM) - DTC INDEX
| DTC | Description |
|---|---|
| IMM-112 | Control module, Internal fault |
| IMM-121 | PIN, Cannot be programmed |
| IMM-122 | Control module. Initiation fault |
| IMM-132 | Key codes. Not programmed |
| IMM-213 | Communication with engine control module (ECM), Faulty communication (B4204T4) |
| IMM-214 | Communication with engine control module (ECM), Incorrect MIN code (B4204T4) |
| IMM-225 | Key codes. Fault in software |
| IMM-233 | Antenna ring. Signal missing |
| IMM-234 | Transponder communication, No communication |
| IMM-235 | Key unknown, Not stored |
| IMM-312 | Communication with the engine control module (ECM). Signal too low (B4204T4) |
| IMM-321 | Communication with the engine control module (ECM). Signal missing (B4204T4) |
| IMM-334 | Control circuit for the indicator lamp. Faulty signal |
| IMM-335 | Control circuit for the starter motor relay |
| IMM-335 | Control circuit for the starter motor relay. Signal too high |
| IMM-336 | Communication with the control module. Faulty signal |
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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