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i got fault 838 Evaporator Sensor 


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 Post subject: i got fault 838 Evaporator Sensor
Posted: Sat Sep 08, 2007 11:13 pm 
Getting Side Ways
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Age: 30

Posts: 721

Joined: 31st Dec 2005

Ride: EF V8 Futura, 180sx

Location: Brisbane, Burpengary
QLD, Australia

Hey guys
my ac inop since i bought the car so im ganna see if i can get it working before summer.
i vacumm out the ac system and regassed the acc at work last week and i fixed the wiring to the thermo fan for ac but still no working so i did a Key On/Engine Off (KOEO) Self Test and got

838 - Evaporator Sensor shorted to B+ or Vref The evaporator

temperature voltage is too high. Can be caused by a short to +12V or faulty sensor

anyone had any experence with this one???

what number wires are they to the ecu? where the Evaporator Sensor located????




Ford EF Futura Black
18" koya Strykers, AU engine with port and polish EB head, crow valve springs, standard cam, Large aftermarket RX7 turbo, T5 manual 3" intercooler piping, 600x300x100 intercooler core, MSII with innovate wideband O2 sensor and guage. BA F6 bodykit

Posted: Sat Sep 08, 2007 11:55 pm 
Technical Contributor
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Age: 53

Posts: 5616

Joined: 14th Jan 2005

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Ride: 96 XH/97 EL

Location: South Coast
NSW, Australia .
Tested that the Air con itself works by applying power to the compressor clutch for a few minutes ???

I don't think code 838 will stop the A/C from working.

Having read some of your other threads on the car (habibi wiring jobs), get hold of a gregory's and check out the A/C circuit properly - some of the associated relays (accessory relay. WAC relay)may've been pulled out.



96 XH Longreach 'S': LPG, Alarm, 3.23:1 LSD, Cruise, Trip Comp, ABS, Power Windows, Mid Series Dome Lt, Climate Ctrl
97 EL Futura S/W: LPG, Alarm, LED int Lts, Trip Comp, F/Lane Dome Lt, Climate Ctrl, T5 Conversion

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