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My engine management system warning light is coming on and down powering the car. Codes are [P] 0203, 1122, 1120, 1550. I,ve replaced the APP sensor to no avail. Shaking the ECU lower harness multiplug sometimes appears to trigger the lamp, but I've stripped and cleaned the multiplug and there doesn't appear to be any sign of corrosion. Anyone experienced the same problem? Is it possible I could have connection problems inside the ECU?
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Very possibly an Ecu fault.(common issue on these).Is this a Z16se 8valve engine?
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normal fault on these is that the throttle pedal potteniometer lose's its 5 volt feed from the ecu, you can piggyback the feed from the other wire but its ony a temporary measure (just proves the point) it realy needs diagnosing properly but i suspect it's the fault, Regards TB
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