Hi guys, hoping for some help narrowing down a problem with my 2009 Insignia 2.0 CDTi.
I had an injector seal go a few weeks back and took it to a mate who is a mechanic. He took out the injectors, cleaned the injector seats and renewed the seals/washers underneath. The car was running perfect before this, even with the leaky injector, just smoky under the bonnet.
When I got the car back it was seriously underpowered, barely getting to between 1500rpm to 2000rpm. The service vehicle soon warning was also on.
He checked it with his diagnostics kit and it came up with a DPF regen code and a boost valve code.
He tried multiple forced DPF regenerations but each of them failed. He suggested maybe a different diagnostic kit would work.
The last time I had a DPF code it was actually the common fault of a split boost hose (about 70000 miles ago) which I changed myself and it solved the problem and put all the lights out. I donÂ’t remember it losing that much power that time but I was pretty sure it was going to be that hose again.
IÂ’ve felt around the hose without removing it and canÂ’t feel or see any splits in it this time.
I checked the fault codes again with a basic code reader and it now only showed “P2453 Diesel Particulate Filter Differential Pressure Sensor Circuit Range / Performance” and the Engine Management light is now on along with a message saying DPF full, refer to manual.
IÂ’m not convinced the DPF is actually the root cause and think it may be a side effect of being limited to such low revs and not able to clear itself. I think this might also be why the forced regens failed but IÂ’m probably wrong about that!
Having read a few similar posts IÂ’m now suspicious of the Boost Control Valve which I donÂ’t remember ever having changed and the car is at 120,000 miles.
I got in the car today and started it up and noticed a humming/buzzing noise that lasted maybe ten seconds at most. I have read that this is one of the symptoms of this valve going faulty. I havenÂ’t noticed that before or heard it since.
It appears to be a common fault and an easy thing to change but IÂ’m just wondering if anyone has had a similar experience with it and if IÂ’m on the right track?
Any help or advice is much appreciated.
Thanks in advance!
I had an injector seal go a few weeks back and took it to a mate who is a mechanic. He took out the injectors, cleaned the injector seats and renewed the seals/washers underneath. The car was running perfect before this, even with the leaky injector, just smoky under the bonnet.
When I got the car back it was seriously underpowered, barely getting to between 1500rpm to 2000rpm. The service vehicle soon warning was also on.
He checked it with his diagnostics kit and it came up with a DPF regen code and a boost valve code.
He tried multiple forced DPF regenerations but each of them failed. He suggested maybe a different diagnostic kit would work.
The last time I had a DPF code it was actually the common fault of a split boost hose (about 70000 miles ago) which I changed myself and it solved the problem and put all the lights out. I donÂ’t remember it losing that much power that time but I was pretty sure it was going to be that hose again.
IÂ’ve felt around the hose without removing it and canÂ’t feel or see any splits in it this time.
I checked the fault codes again with a basic code reader and it now only showed “P2453 Diesel Particulate Filter Differential Pressure Sensor Circuit Range / Performance” and the Engine Management light is now on along with a message saying DPF full, refer to manual.
IÂ’m not convinced the DPF is actually the root cause and think it may be a side effect of being limited to such low revs and not able to clear itself. I think this might also be why the forced regens failed but IÂ’m probably wrong about that!
Having read a few similar posts IÂ’m now suspicious of the Boost Control Valve which I donÂ’t remember ever having changed and the car is at 120,000 miles.
I got in the car today and started it up and noticed a humming/buzzing noise that lasted maybe ten seconds at most. I have read that this is one of the symptoms of this valve going faulty. I havenÂ’t noticed that before or heard it since.
It appears to be a common fault and an easy thing to change but IÂ’m just wondering if anyone has had a similar experience with it and if IÂ’m on the right track?
Any help or advice is much appreciated.
Thanks in advance!
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