Hi lads new to the group. Got a 2020 Vivaro as a no crank no start condition. Main relay powers up you can hear everything switch on and fuel pump prime. Turn the key, nothing. When bridging starter relay vehicle just cranks but doesn’t start. Where would you go from here? Vehicle also has an adblue remap if you think that could be linked. Cheers!

Hi, I bet I’m in the right place, just returned from a 2004 Peugeot 607 2.2 HDi. Battery support unit connected and set to 13.9V, but my Autel was only showing around 11.5V with the ignition on. Checked with a multimeter: 13.9V at the battery and 13.9V at the large main fuse/feed under the bonnet, but only 11.75V at the OBD socket. Pin 16 to both OBD earths and a separate chassis earth all gave the same reading. Turning ignition off caused the voltage to drop rise to 12.3v, despite the support unit maintaining 13.9V at the battery. Start the engine, however, and once the alternator is charging the voltage is fine. It also had a few seemingly unrelated faults, including a couple of ABS/wheel-speed-sensor faults. I didn’t risk programming it and I’m not going back to the vehicle, but has anyone come across something similar before or have any thoughts on what could cause it?