The fault code is likely indicating that there is a problem with the rear number plate light circuit. It could be a blown bulb, a loose connection, a faulty wiring, or a problem with the control module related to the lighting system. 2005 Vauxhall Meriva 1.4 Twin Port. Orange warning light car with upwards spanner.
My vauxhall meriva has come up with a warning saying code 4 and chimes when you first start the car. what could it be. A code 4 it means that there is a problem with the air conditioning. Check if the coolant levels are ok and if the thermostat is not stuck or malfunctioning. Oct 09, 2015 • Vauxhall Cars & Trucks. The most common fix for P0420 in the Opel Meriva is a new catalytic converter, followed by an O2 sensor replacement. Before taking your Meriva into an exhaust shop for an (expensive) new catalytic converter, let’s ensure that’s what you need. Here’s a good P0420 diagnostic order for the Opel Meriva: 1. Check for Other Codes. rdDV.