Code 54

[cecil]

Hi can anyone help me with fault code 54 can`t get any sence from dealer .Not had gt4 for long and had nothing but problems. Will not accerate cleanly,

[daktari]

Code 54. - Intercooler ECU signal. -

Reasons for display.

1/ Low water level in chargecooler.

2/ Chargecooler water pump innoperative.

Check.

1/ Intercooler coolant.

2/ Coolant level sensor circuit.

3/ Coolant level sensor.

4/ Intercooler water pump circuit.

5/ Intercooler ECU circuit.

6/ Intercooler ECU.

7/ ECU.

Chargecooler/Intercooler are one and the same in this instance.

Check the items in the above order. I believe you have to check water level with the engine running.

Hope this helps. Shout if it don`t.

[Sketchy]

Code 54. - Intercooler ECU signal. -

Reasons for display.

1/ Low water level in chargecooler.

2/ Chargecooler water pump innoperative.

Check.

1/ Intercooler coolant.

2/ Coolant level sensor circuit.

3/ Coolant level sensor.

4/ Intercooler water pump circuit.

5/ Intercooler ECU circuit.

6/ Intercooler ECU.

7/ ECU.

Chargecooler/Intercooler are one and the same in this instance.

Check the items in the above order. I believe you have to check water level with the engine running.

Hope this helps. Shout if it don`t.

9 times out of 10 it'll be the Coolant level. Make sure the engine is stone cold when you do this otherwise the fluid will be hot and expanded so you won't be able to top it up properly.

undo the Chargecooler(The big metal thing on top of the engine between the turbo and throttle body) cap, start the engine now go back to the engine bay with you bottle of coolant and rev the engine you see the coolant in the chargecooler swirl and the level will drop noticably this is when the pump is running. Top up the coolant level to the neck of the filler hole and replace the cap.

You got to get a bit of a riggle on while doing this as the pump will stop again after about 30 seconds and the level will rise back up, if you've not got the cap back on by then the water will spill out and make a right mess :ffs: .

Best way to do it is give the engine a quick rev every 10 seconds or so to keep the pump on until you've finished. :D

Next turn off the engine and reset the ecu by removing either the ECU B fuse from the fuse box or disconnecting the Negative Battery lead. Leave either disconnected for a few minutes then replace and check engine again. Go for a quick drive and you shouldn't get any more warning light. If you do it's something else like the pump or sensor. :)

[cecil]

Code 54. - Intercooler ECU signal. -

Reasons for display.

1/ Low water level in chargecooler.

2/ Chargecooler water pump innoperative.

Check.

1/ Intercooler coolant.

2/ Coolant level sensor circuit.

3/ Coolant level sensor.

4/ Intercooler water pump circuit.

5/ Intercooler ECU circuit.

6/ Intercooler ECU.

7/ ECU.

Chargecooler/Intercooler are one and the same in this instance.

Check the items in the above order. I believe you have to check water level with the engine running.

Hope this helps. Shout if it don`t.

9 times out of 10 it'll be the Coolant level. Make sure the engine is stone cold when you do this otherwise the fluid will be hot and expanded so you won't be able to top it up properly.

undo the Chargecooler(The big metal thing on top of the engine between the turbo and throttle body) cap, start the engine now go back to the engine bay with you bottle of coolant and rev the engine you see the coolant in the chargecooler swirl and the level will drop noticably this is when the pump is running. Top up the coolant level to the neck of the filler hole and replace the cap.

You got to get a bit of a riggle on while doing this as the pump will stop again after about 30 seconds and the level will rise back up, if you've not got the cap back on by then the water will spill out and make a right mess :ffs: .

Best way to do it is give the engine a quick rev every 10 seconds or so to keep the pump on until you've finished. :D

Next turn off the engine and reset the ecu by removing either the ECU B fuse from the fuse box or disconnecting the Negative Battery lead. Leave either disconnected for a few minutes then replace and check engine again. Go for a quick drive and you shouldn't get any more warning light. If you do it's something else like the pump or sensor. :)

[cecil]

Thanks alot for help,looks like i have no voltage at water pump.Pump works if given a feed,is there a seperate module for pump or is it in main ecu.Thanks again, at least i am on the right track now.

[m0sca]

Hi everyone

I might be thick or something, but what coolent do you put in for the intercooler.

cheers

SL

[Sketchy]

Hi everyone

I might be thick or something, but what coolent do you put in for the intercooler.

cheers

SL

The same stuff you put in the radiator, just normal engine coolant nothing special

[m0sca]

Thanks for that mate

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[marvinGT4]

You lot are so informative

Im going to go and check mine now

[dawesy]

there is a separatye relay for the chargecooler pump. think it is near the rad on the lhs of the engine bay as you look at it from the front. the pump doesnt run constant anyway it should fire up if you blip the throttle.

start the car then blip the throttle from under the bonnet, you should hear the pump run if you cant then remove the cap and try the same again and see if the coolent moves inside the charge cooler, if it does then all is well with the pump side of things and its just the level sensor that needs frigging out by bridging the two pins in the connector

[Rob_A]

Another quick tip, to make sure you fill it to the absolute brim (the sensor really is that sensitive), you can fill a glass bottle (I used a stella one) with coolant and quickly turn it and place it over the filler hole on the charge cooler, this will then act as a feed while you rev the engine, and any surplus will merely go into the catch tank :)

Quickly remove the bottle again spilling as little as possible, and voila, one charge cooler filled to the brim.

After resetting the ECU (little 5amp fuse at front of the fuse box) for 30seconds, if it is still not sorted, the sensor is broken or you need to look at the pump.

If it isnt sorted, your next step should be to unplug the sensor and bridge the loom to trick the ECU into thinking the sensor is giving a full reading. Reset the ECU. Hopefully it will then be sorted, and you can then either replace the sensor, or tape up the plugs with the bridge in place and just make sure you keep an eye on the fluid level.