Hi there,
I have owned this Chevrolet Captiva 2.2 diesel automatic 2011, (series 2) for almost 2 years now with quite an annoying issue related to turbo underboost petty much when I first bought it. I’ve taken it to several garages to try and diagnose the issue but they have all come back without being able to confidently state the problem. Hopefully someone may have a similar issue to direct me what to try next.
So the issue, the car drives perfectly all the time except when I boot it for more than 30 seconds (I.e. under heavy load) and then the spanner service light comes on and goes into limp mode. I can quite easily cover 500mile journeys without any trouble as long as I take my foot of the gas at around 25 seconds of booting it, letting the revs to full back below 2000 rpm. There is one particular 2 mile long hill on a motorway near me that will always quite consistently put the car into limp mode when I try and maintain 70mph. Once in limp mode, I stop turn off the ignition and restart, all lights are cleared and the car is out of limp mode.
Diagnostics state two codes, P0299 - engine underboost and P2263 Turbocharger boost system performance.
Even when the fault codes are cleared and I boot it to put it back into limp mode these tow fault codes are the only ones that reappear.
The last garage I took it too who just specialise in diagnostics stated it was undiagnosable but could state items that they thought it wasn’t. The symptoms almost suggest a turbo / wastegate issue, but knowing how expensive to replace this item they weren’t confident enough to tell me that it was an issue with the turbo and probably more suspected a possible sensor.
Turbo hoses checked and no leaks, holes, or loss of pressure.
DPF checked and engine runs with factory emissions so considered clean.
Car performance, power and engine boost all good provided it’s not sustained for more than 30 seconds.
So generally we can live with the car as it is except for the fact we want it to tow a caravan which will always put the car under load and hence then put it into limp mode.
In the UK Chevrolet parts aren’t cheap, so I don’t want to start randomly changing parts unless it looks really plausible that is the issue.
I’m not a mechanic but generally quite good with cars, so I’ve started to create a sensor / component map attached. Any help welcome
I have owned this Chevrolet Captiva 2.2 diesel automatic 2011, (series 2) for almost 2 years now with quite an annoying issue related to turbo underboost petty much when I first bought it. I’ve taken it to several garages to try and diagnose the issue but they have all come back without being able to confidently state the problem. Hopefully someone may have a similar issue to direct me what to try next.
So the issue, the car drives perfectly all the time except when I boot it for more than 30 seconds (I.e. under heavy load) and then the spanner service light comes on and goes into limp mode. I can quite easily cover 500mile journeys without any trouble as long as I take my foot of the gas at around 25 seconds of booting it, letting the revs to full back below 2000 rpm. There is one particular 2 mile long hill on a motorway near me that will always quite consistently put the car into limp mode when I try and maintain 70mph. Once in limp mode, I stop turn off the ignition and restart, all lights are cleared and the car is out of limp mode.
Diagnostics state two codes, P0299 - engine underboost and P2263 Turbocharger boost system performance.
Even when the fault codes are cleared and I boot it to put it back into limp mode these tow fault codes are the only ones that reappear.
The last garage I took it too who just specialise in diagnostics stated it was undiagnosable but could state items that they thought it wasn’t. The symptoms almost suggest a turbo / wastegate issue, but knowing how expensive to replace this item they weren’t confident enough to tell me that it was an issue with the turbo and probably more suspected a possible sensor.
Turbo hoses checked and no leaks, holes, or loss of pressure.
DPF checked and engine runs with factory emissions so considered clean.
Car performance, power and engine boost all good provided it’s not sustained for more than 30 seconds.
So generally we can live with the car as it is except for the fact we want it to tow a caravan which will always put the car under load and hence then put it into limp mode.
In the UK Chevrolet parts aren’t cheap, so I don’t want to start randomly changing parts unless it looks really plausible that is the issue.
I’m not a mechanic but generally quite good with cars, so I’ve started to create a sensor / component map attached. Any help welcome
