Customer statement / workshop findings: Malfunction Indicator Lamp (MIL) illuminated on driver instrument...
Bentley technical service bulletin 2057991/1 for 2016-2020 Bentley Mulsanne.
- Bulletin number
- 2057991/1
- Component
- Electrical system
- Summary
- Customer statement / workshop findings: Malfunction Indicator Lamp (MIL) illuminated on driver instrument panel. Engine runs unevenly when starting from cold. Camshaft position Diagnostic Trouble Codes (DTCs) stored within Engine Control Unit (ECU). Technical background: When the engine is cold increased friction within the camshaft adjuster unit may result in camshaft position DTCs being stored within the ECU. The concern can be resolved by replacing the camshaft timing gear with a B level part which utilises an internal return spring with higher rate. See Parts information below. There are many possible DTCs related to this failure, the following is a typical example P001200 : A Camshaft position (Bank 1) timing over-retarded.
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