Engine Control Unit Lancia Delta 844 Magneti Marelli 8GMF

Revision - Services

General Description
We offer assistance and repair for the most common failures encountered on ECMs and engines. We diagnose and resolve a wide range of issues related to the engine and the vehicle's electronic system, with a focus on malfunctions that may compromise vehicle performance and starting.

Common Failures and Symptoms

• Complete malfunction: The vehicle does not communicate with the diagnostic tool and does not start.

• Cylinder misfire

• Fault Codes Encountered
  Here is a list of the main fault codes detected during our service operations:

• P0300 - Multiple Cylinder Misfire
  This code indicates misfires in multiple cylinders. It can be caused by issues with spark plugs, ignition coils, or problems with the fuel or air system.

• P0301 - Cylinder 1 Misfire
  This code signals a misfire in cylinder 1. Common causes include a faulty ignition coil, spark plug, or fuel injector.

• P0302 - Cylinder 2 Misfire
  Indicates a misfire in cylinder 2, which could be caused by a defective ignition coil, spark plug, or malfunctioning fuel injector.

• P0303 - Cylinder 3 Misfire
  Another misfire code, this time for cylinder 3. Diagnosis and repairs will be similar to the other cylinders.

• P0304 - Cylinder 4 Misfire
  Refers to a misfire in cylinder 4. It's important to check the ignition system, fuel measurement, and the injection system.

• P0350 - Ignition Coil Primary/Secondary Circuit Malfunction
  This code occurs when there's a malfunction in the ignition coil circuit. It can be caused by a faulty coil, cables, or connectors.

• P0351 - Ignition Coil 1 Malfunction
  Indicates a malfunction specifically with the ignition coil for cylinder 1.

• P0352 - Ignition Coil 2 Malfunction
  Refers to a malfunction in the ignition coil for cylinder 2.

• P0353 - Ignition Coil 3 Malfunction
  Signals a malfunction in the ignition coil for cylinder 3.

• P0354 - Ignition Coil 4 Malfunction
  Refers to a malfunction in the ignition coil for cylinder 4.

• P0606 - Faulty Engine Control Module (ECM)
  Indicates a problem with the engine control module (ECM), which may be defective and require repair or replacement.

Customer Reports
Here are some of the most significant issues reported by our customers:

• "The check engine light is on, indicating an injector error. The car starts but runs unevenly."

ECM Units Repaired

• 8GMF-HW503
• 51896765 8GMF.A1 HW503 4S21-CD53