Hope you can help. The car is a Skoda Fabia.

The EPC lights up when the car is started for the first time each day. Subsequent startups do not result in EPC light being displayed. The garage have run a diagnostic test, which results in the following:

16785 P0401 Exhaust Gas Recirc.Flow Insufficient Detected

17566 P1158 Manifold Abs.Pressure Sensor Circ. Range/Performance

17646 P1238 Cyl.2-Fuel Inj.Circ. Open Circ.

17645 P1237 Cyl.1-Fuel Inj.Circ. Open Circ.

17647 P1239 Cyl.3-Fuel Inj.Circ. Open Circ.

17833 P1425 Tank Vent.Valve Short to Ground

17523 P1115 O2 Sensor Heater Circ.,Bank1-Sensor1 Short to Ground

17525 P1117 O2 Sensor Heater Circ.,Bank1-Sensor2 Short to Ground

However the readings are intermittent.

I addtion, the car has now taken to having problems starting shortly after having turned the engine off i.e. when restarting after filling up with petrol.

The garage is at a loss where to start, and I have even less of a clue. Can anyone please help me to point the garage in the right direction?

Many thanks in advance.

I'd clear that lot down and start again.

But on face value id say at least one cause of four of those faults couild well be a fuel pump relay.

But this would depend on what engine as you havent put what you have other than a Fabia.

Possibly a wiring fault, water ingress maybe?

There is a well documented problem with early cars suffering water penetration and corrosion of the engine bay wiring loom in the area of the N/S wheel under the battery.

Thanks for the quick response both. The car is a Fabia Elegance 1.4 if that helps.

And just to add, the garage did clear the faults down a couple of times and each time the same faults keep appearing with intermittently against each in the diagnostics

The injector and vent valve faults could be down to a fuel pump relay. this powers the engine ECU and all of the above items come up with faults when the relay fails.

The heater element of the lambda probes are common, as long as there is the correct power to the probe id expect a faulty probe.

EGR fauls I would check the EGR pipe from the valve to the throttle body isnt blocked, also check the valve is set up correctly.

Oh and the manifold pressure sensor could indicate a problem with the sensor, but I would check the inlet manifold for oil deposits first, but sometimes they will flag a fault if the car isnt running right so id check that last.

Thanks Lummox.

I'll take it back to the garage tomorrow and update the thread to let you know how I got on.

17646 P1238 Cyl.2-Fuel Inj.Circ. Open Circ.

17645 P1237 Cyl.1-Fuel Inj.Circ. Open Circ.

17647 P1239 Cyl.3-Fuel Inj.Circ. Open Circ.

to me, this means glow plug fault, test them yourself with a multimeter, it looks like they are open circuit

Glow plug fault on a 1.4 16v petrol, could be an interesting one to sort out that.

lol !

injector fault then

http://briskoda.net/off-topic-chit-chat/how-adjust-spark-plug-gap-diesel/77433/