S5 CPU trouble codes
#1
Rotary Fan
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S5 CPU trouble codes
My 1990 GXL has just been rebuilt and is throwing codes 17(feedback system) and 27(MOP). Before I start tearing things apart I was wondering if you guys might have a slight idea about what could have triggered these codes. I was told the car has bigger than normal injectors, I think 550s but i dont see that causing these codes. The metering pumps oil lines have oil in them so im assuming it still works. Other than that the car runs great, im just paranoid and want to diagnose this before something bad happens.
#2
Former Moderator. RIP Icemark.
Don't you mean ECU (Emissions Control Unit or Engine Control unit) rather than CPU which is the body computer and has no trouble code reporting
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Originally Posted by Icemark
Don't you mean ECU (Emissions Control Unit or Engine Control unit) rather than CPU which is the body computer and has no trouble code reporting
#5
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I had a Code 17 before on my 90 Vert. Mine turned out to be the 02 sensor, but not any 02 sensor. I had put a new Bosch sensor on but it still had the code 17. I replaced it with NGK #24036 sensor w/connector and it got rid of the code. I got the sensor at Sparkplugs.com for like $45. Not sure if this is your problem since you replaced the injectors, but it worked for me.
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Originally Posted by jdonnell
I had a Code 17 before on my 90 Vert. Mine turned out to be the 02 sensor, but not any 02 sensor. I had put a new Bosch sensor on but it still had the code 17. I replaced it with NGK #24036 sensor w/connector and it got rid of the code. I got the sensor at Sparkplugs.com for like $45. Not sure if this is your problem since you replaced the injectors, but it worked for me.
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