fault code

civic25 · Post by **civic25** » Sat Sep 11, 2010 7:50 am

Hi i have a ep3 race car with a kpro installed , my car has a forged bottom end , standard head with stage 3 crower cams , ive just installed a skunk 2 plenum and 74mm throttle body , the car will start but wont accept any throttle , having put an AFR meter on it its jumping from very rich (10.6ish ) on tick over , but when throttle is applied it jumps to very lean ( 18+ ) the ECU has now shown a fault code of P1607 and says "ecu internal circuit malfunction , check calibration " . Can you please help and tell me what the fault code means and perhaps how to solve this issue .
Thanks

Post by **Hondata** » Sat Sep 11, 2010 9:06 am

Normally this is because you have loaded a PRB calibration into a PRA ECU. The information requested in the posting guidelines will tell us.

civic25 · Post by **civic25** » Sat Sep 11, 2010 9:15 am

sorry whats the difference between a PRB and a PRA ecu ?

civic25 · Post by **civic25** » Sat Sep 11, 2010 12:54 pm

Ok got the difference now , we definately used a euro map and when we were mapping through map sensor AFR was all over the place , wouldnt settle and as i said was rich on idle and as throttle was added went leaner regardless of how much we trimmed the fuel. Help !!!!

Post by **Spunkster** » Mon Sep 13, 2010 10:48 am

http://www.hondata.com/forum/viewtopic.php?t=3629