2006 Signum 2.2 engine fault codes! Help please :)

**t13con** · 15th January 2011, 15:30

HI all, my trusted 2.2 direct engine has 3 fault codes and Im not sure were to begin. Ive looked up and may are saying the fuel pump and regulator need replacing but I thought Id check on here first.
My car just went into limp home mode/engine light on after 45mins of driving. If i switch the car off and restart it drives ok, but after a few seconds the lights come back on

The codes are
P0130, no plausibility between o2 sensor 1 and bank1 and same on o2 2.
P1191-5a, fuel rail pressure sensor circuit low.
P0303-01, cylinder 3 misfire detected.

The car had a full service about 6 months ago, (new fuel filter and plugs). do you think its just a spark plug failure? And how do you test a spark plug if so?
Thanks in advance.

**paulvectrac** · 15th January 2011, 15:49

er 1 is a spartk plug prob gone one is oexgen sensor i think and also the other looks as if your fuel pump is on its way out dont hold me to them but i think am not far away

**t13con** · 15th January 2011, 17:41

Thanks, will buy a spark plug and see if that code disappears, and try and find a oxy sensor and pump on ebay

**cont1204** · 15th January 2011, 19:20

Originally Posted by t13con

HI all, my trusted 2.2 direct engine has 3 fault codes and Im not sure were to begin. Ive looked up and may are saying the fuel pump and regulator need replacing but I thought Id check on here first.
My car just went into limp home mode/engine light on after 45mins of driving. If i switch the car off and restart it drives ok, but after a few seconds the lights come back on

The codes are
P0130, no plausibility between o2 sensor 1 and bank1 and same on o2 2.
P1191-5a, fuel rail pressure sensor circuit low.
P0303-01, cylinder 3 misfire detected.

The car had a full service about 6 months ago, (new fuel filter and plugs). do you think its just a spark plug failure? And how do you test a spark plug if so?
Thanks in advance.

I don't suppose you were towed home the other day by the AA and live in Bromborough? Cylinder 3 I would say as either a sparkplug or the coilpack. I'm not sure on the other two codes though.

**t13con** · 16th January 2011, 10:45

HI, no it wasnt, luckily for me I was in wallasey Village when it went into limp home mode. Im about to swap the plugs to see if that fault code disappears. Idont see how one problem (i hope) could lead to 3 fault codes?

**gaz51** · 16th January 2011, 16:39

I bet the main cause of these DTC-s are the high pressure fuel pump. The misfire DTC is definately from that. And when an engine developes a misfire, an O2 sensor DTC may easily occur.