Can anyone help I have been getting issues, I have a C5 2.2 diesel 2009 and it started with the odd time when the handbrake warning light came on, you take the key out and start again and all is fine. This then moved onto after filling up the anti pollution light came on and it went into limp mode it did this twice, all was well for about 3 weeks then last week the anti pollution light came on then an ABS warning then a hand brake warning then no power steering. It was suggested it was low voltage the battery was tested twice and all has been found to be OK. Nothing for a week then today on start up the hand brake light drove home stopped and restarted and then the antipollution light and limp mode again.