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.
2003 Volvo C70 2.3 53, StandardFACTORY OEM SERVICE PROCEDURE
IMMOBILIZER MODULE (IMM) DTCs
DTC INDEX
| Volvo Code | Description |
|---|---|
| IMM-112 | Control module, Internal fault |
| IMM-121 | PIN, Cannot be programmed |
| IMM-122 | Immobilizer not initiated |
| IMM-132 | No key codes programmed |
| IMM-213 | Communication with engine control module (ECM), Faulty communication |
| IMM-214 | communication from engine control module (ECM), wrong MIN code |
| IMM-225 | Incorrect programming of key code |
| IMM-233 | Antenna ring, No connection |
| IMM-234 | Transponder communication, No communication |
| IMM-235 | Key unknown, Not stored |
| IMM-312 | Communication link to the engine control module (ECM), Short-circuit to ground |
| IMM-321 | Initiation signal from engine control module (ECM), Signal missing |
| IMM-336 | VGLA control circuit, Faulty connection to VGLA control module |
Factory Service Tools
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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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