Unknown fault codes??

Varnis9

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Hi guys

I have converted my old 10pin c20xe diagnoatics to the late 16pin obd 2 and passed through a diagnostic scanner. I get a bunch of weird fault codes with description "Unknowm fault code" . Anyone faced this before?

Codes are: 03, 840, 810, 850, 830, 730
 

Varnis9

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Right so I have rescanned the ecu and got the proper codes now these are 84, 81, 85, 83 and 73.

73 reflects to low voltage on the amf
81-85 reflect to low voltage on the injectors.

Could the amf issue cause low voltage on the injectors as well??
 

TomF

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Afm code 73 is a fault with the signal back to the ecu

Injectors are supplied 12v from the fuel pump relay and are earthed through the ecu
 

Varnis9

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Afm code 73 is a fault with the signal back to the ecu

Injectors are supplied 12v from the fuel pump relay and are earthed through the ecu
Injectors arent earthed on the fuel rail pal?
 

TomF

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Injectors arent earthed on the fuel rail pal?
Not directly, but the earths on the rail are worth checking if you having problems
 

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