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Old Jun 18, 2004 | 08:33 PM
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My ecu is throwing codes 12 and 43... what could be causing the code 43 and how do i fix it. Its a 94 h23.
Thanks.
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Old Jun 19, 2004 | 03:01 AM
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12
IAT Sensor (Intake Air Temperature)
defective circuit or unplugged / defective sensor

43
Fuel Supply System
defective or malfunctioning fuel supply system
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Old Jun 19, 2004 | 05:57 AM
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I thought 12 was egr valve?
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Old Jun 19, 2004 | 08:14 PM
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Read my sig.
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Old Jun 19, 2004 | 11:23 PM
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it means Exhaust Gas Recirculation more then likely it is bad,check all vaccum lines and you map sensor
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Old Jun 19, 2004 | 11:24 PM
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im guessing checkengine light is on?
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Old Jun 20, 2004 | 08:29 AM
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yea.. the light is on... the vacuum lines are hooked up and the egr is connected.
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