Peugeot 406 HDI starting problems - glow plug light not coming on when cold car can be started but engine warning light stays on and engine has stopped whilst on the move What is the problem?

The issue with your Peugeot 406 HDI may be related to a malfunctioning glow plug system, which can prevent the glow plug light from illuminating when the engine is cold. This could lead to starting difficulties and contribute to poor engine performance. Additionally, the persistent engine warning light indicates a potential fault in the vehicle's electronic control unit (ECU) or other critical components, which could cause the engine to shut off while driving. It is advisable to have the vehicle diagnosed using an OBD-II scanner to identify specific fault codes and address the underlying problem.