I HAD SIMILAR PROBLEM WITH MY MOVANO TIPPER TRUCK. gAVE IT TO GARAGE SEVERAL TIMES AND THIS PROBLEM BAFFLED THEM. THEY EVENTUALLY SPOTTED THAT THE ONBOARD THE ENGINE MANAGEMENT SYSTEM HAD SPOTTED A PROBLEM WITH THE CAM SHAFT/CAMBELT SENSOR WHICH INTURN STOPPED THE VAN FROM STARTING
Have it checked for codes.
To jump start a Vauxhall Vivaro van, start by removing the battery cover. Taking your cables, connect one end of the lead to the positive terminal on the discharged battery, then connect the other end of this lead to the positive terminal on the battery you are jumping from. Take the other lead and connect it to the negative terminal on the discharged battery. Next, use the end of this lead to connect somewhere to ground the current; for example, the engine block or screw connection in the engine suspension on the vehicle providing the jump. When finished, remove the leads in the exact opposite direction you applied them.
If it is a diesel engine it could be the glow plugs.
removing the heater core and temperature control cables
battery under passenger carpet i think
when the engine is hot the check engine light came on and the fan(is ok) don't start
that normally means the chip in your key has to be programed or the chip has stop working so u might need a new chip
If this engine is an interference engine it may have done damage to valve, piston, or head. Or the timing is off so far that the engine will not start. Install a new timing belt correctly and start the engine. You will then know if any damage was done.
crankshaft position sensor get a new one stick it on problem solved
The light should stay on whenever the key is on and the engine is off.
Simply turn on the ignition but do not attempt to start the engine. If the light bulb is good you will see the Check Engine light illuminate and stay on. If you do not see the Check Engine light, the bulb is defective or has been removed.
this happened to my vivaro 1.9 dti and my mate who is a mechanic removed the egr valve and gave it a good clean with carbon cleaner for about an hour and it is fine now hope this helps with your problem