VOLVO
ECM-7600 - Immobilizer. Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
7 modelsC30 (2007–2013), S40 (2004–2013), S60 (2001–2009), V50 (2004–2013), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (13)
- Volvo C30 (2007–2013)2007–2008, 2010–2011Engine D4164T only
- Volvo S40 (2004–2013)2005–2008, 2010–2011Engine D4164T only
- Volvo S60 (2001–2009)2006Engine D5244T4, D5244T5, D5244T6, D5244T7 only
- Volvo S60 (2001–2009)2007–2009Engine D5244T4, D5244T5, D5244T7 only
- Volvo V50 (2004–2013)2005–2008, 2010–2011Engine D4164T only
- Volvo V70 (2000–2008)2006Engine D5244T4, D5244T5, D5244T6, D5244T7 only
- Volvo V70 (2000–2008)2007Engine D5244T4, D5244T5, D5244T7 only
- Volvo V70 (2000–2008)2008Engine D5244T5, D5244T7 only
- Volvo V70 XC / XC70 (2001–2007)2006–2007Engine D5244T4 only
- Volvo XC90 (2003–)2006–2007Engine D5244T4 only
- Volvo XC90 (2003–)2008–2010Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2011Engine D5244T18, D5244T4, D5244T5 only
- Volvo XC90 (2003–)2012All engines except: B5254T2, B6324S5
What does this fault code mean?
The engine control module (ECM) checks the immobilizer code against the central electronic module (CEM) before the engine is allowed to start. If the code is missing or wrong, the fault code is set and the engine does not start. The fault applies to the C30, S40 (04-), S60 (-09), V50, V70, V70 XC and XC90.
Possible causes
- Wrong ignition key
- Low battery voltage
- Poor plug contact or corrosion at the ECM connector
- Open circuit or short to ground in the power supply to the ECM
- Open circuit in the CAN wiring
What you can do
- 1Check that you are using the correct ignition key, and try another key if you have one
- 2Check that the battery voltage is normal and charge the battery if needed
- 3Check that the connector to the engine control module is secure and free from corrosion
- 4Check that the fuses for the engine control module are intact
- 5If the fault remains, have a workshop check the power supply and the CAN wiring to the engine control module
Symptoms you may notice1
- The engine does not start, sometimes or all the time
General guidance for car owners. Diagnosis on the car can point to a different cause.