Good day all,
After scanning my Peugeot 406, it showed Air Pump Relay Permanent Fault.
Please what does this mean?
Air Pump Relay Permanent Fault
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steve_earwig
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Re: Air Pump Relay Permanent Fault
Hello. I've split this into a new topic because I'm not even sure it's anything to do with air conditioning - is this from a fault code? I'm not sure what an air pump is doing on a 406, emissions? Or do you mean the a/c compressor?
Unskilled meddling sin©e 2007
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Re: Air Pump Relay Permanent Fault
There is a vacuum pump on the gearbox end of the cylinder head but as far as I know no electronics involved with it and if that had failed you wouldn't have much in the way of brakes or turbo boost.
The aircon pump is for gas not air so I am mystified too!
Peter
The aircon pump is for gas not air so I am mystified too!
Peter
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Doggy
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Re: Air Pump Relay Permanent Fault
Thanks Steve - I couldn't figure out how to split it off.steve_earwig wrote: ↑Tue Jun 02, 2020 10:37 am Hello. I've split this into a new topic because I'm not even sure it's anything to do with air conditioning - is this from a fault code? I'm not sure what an air pump is doing on a 406, emissions? Or do you mean the a/c compressor?
Suspect the OP is referring to an air pump used to help catalytic converter operation on a petrol engine
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steve_earwig
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Re: Air Pump Relay Permanent Fault
While I've time... Just looking in Haynes, apparently there is a secondary air injection system fitted to 1.8 petrols that involves an air pump (something about pumping air in the exhaust to increase heat and get the cat working). Nothing to do with air conditioning 
Presumably the ecu is not seeing the system turned on and is flagging it, could be the relay, the connections, the wiring, the ecu.... Powers and grounds I guess, look for a positive supply at the relay, an earth (negative), look for the ecu turning it on (tricky without Peugeot Planet I guess) and look for a load. I have no idea where such a relay would be located though!
Presumably the ecu is not seeing the system turned on and is flagging it, could be the relay, the connections, the wiring, the ecu.... Powers and grounds I guess, look for a positive supply at the relay, an earth (negative), look for the ecu turning it on (tricky without Peugeot Planet I guess) and look for a load. I have no idea where such a relay would be located though!
Unskilled meddling sin©e 2007
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Re: Air Pump Relay Permanent Fault
That would account for it - I don't know anything about petrols.
Peter
Peter
Re: Air Pump Relay Permanent Fault
the pump is locate around your front left tire, is close to fog light , u can access it when u remove the sound protector, if it show permanent fault it mean either the connection is open or the pump is bad and it need replacement, next the check the relay the supply current to it.