B18C in EK4, engine diagnostic light on


Chris_EK4

Chris_EK4

New Member
Joined
Jan 27, 2010
Messages
98
Hi,

Fitted a 96 spec B18C w/S80 (JDM) into my '98 EK4, had to use the B16 loom, but used the P73 ECU, all the loom plugs in fine except the sensor on the 2nd inlet branch that the B16 doesn't have (been told its an air temp sensor) is left unplugged as it doesn't have it on the B16 loom, and the engine diagnostic light is on, the one on the induction piping is still plugged in, could that cause it?

When you turn the key two clicks, the diag light disappears as it should then re-appears after 3-4 seconds...then stays on even when the engine is running, the engine itself runs fine, there was a little rattle the very first time it started up for a second, (guessing that's as it hadn't been started for a few weeks), but have started it again multiple times since, and sounds sweet...its all plugged in, only thing left to do is oil change and driveshafts need putting in, all the sensors on the inlet, as well as the lambda are the ones off the b16 so should work fine.

Any ideas?

Thanks
 
it could possibly be that you still have the plug unpluged mate, on one of my old egs i had a problem similar to this, everything was fine then the engine management light cane on. tried swaping all sensors from my ek9 ond nothing made any difference.the car still ran spot on, as long as its running sweet it may not be anything to worry about.
 
As above check fault code by bridging the 2 pin socket and counting the flashes.
 
THINK...not sure but think its saying 21...VTEC solenoid spool valve?

Not 100pc on how to read it though
 
Pretty sure it's 20 and 21, so electronic load detector and VTEC spool solenoid?
 
If it's 20 it will be two long flashes and 21 will be two long and one short flash. Or if your saying its the two of them it could be 41 which wud be primary O2 sensor. Try and post a vid up of it flashing
 
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Just checked deffo 20 and 21 mate, there's a pause in between the two sequences
 
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