Immobilizer Communication Fault
2007-2016 Volvo S80 3.2L I6 🇨🇦
Description
The ECM detected a communication failure with the immobilizer system. The anti-theft system cannot verify the key, preventing engine start authorization. Volvo uses a transponder-based immobilizer integrated with the CEM (Central Electronic Module).
Symptoms
- Engine cranks but will not start
- Immobilizer warning light on
- Key symbol on dashboard
- No fuel injection pulse
- No ignition spark
Common Causes
- Faulty key transponder
- CEM (Central Electronic Module) fault
- Antenna coil around ignition lock failure
- ECM immobilizer data corrupted
- Wiring fault between CEM and ECM
Diagnostic Steps
- Test key transponder recognition with VIDA/DiCE
- Check CEM communication
- Test antenna coil resistance
- Verify immobilizer authorization status in ECM
- Check wiring between CEM and ECM
Repair Notes
Reprogram the immobilizer system using Volvo VIDA/DiCE; replace CEM or key if defective.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1081 on Other Vehicles
Common Questions
What does code P1081 mean on a 2007-2016 Volvo S80?
P1081 stands for "Immobilizer Communication Fault". The ECM detected a communication failure with the immobilizer system. The anti-theft system cannot verify the key, preventing engine start authorization. Volvo uses a transponder-based immobilizer integrated with the CEM (Central Electronic Module).
What are the symptoms of P1081 on a Volvo S80?
Common symptoms of P1081 include: Engine cranks but will not start, Immobilizer warning light on, Key symbol on dashboard, No fuel injection pulse, No ignition spark.
What causes P1081 on a 2007-2016 Volvo S80?
Common causes of P1081 include: Faulty key transponder, CEM (Central Electronic Module) fault, Antenna coil around ignition lock failure, ECM immobilizer data corrupted, Wiring fault between CEM and ECM.