CEL (Code)4 on P30 ECM
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Honda-Tech Member
Joined: Oct 2005
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From: Corinth, Texas, USA
CEL (Code)4 on P30 ECM
Ok, I have looked and check my CKP according to this link....http://www.ozhonda.com/forum/showthr...ics-Code-4-CKP
B16a (JDM)
P30 (JDM)
Pretty much all stock engine....car is a 1992 VX hatch...I know the wiring harness on this car is different than others...and I have double checked my wiring and all of it is good.
Ok, everything checks out with my multimeter and I do not have an oscilloscope. The only test I am not sure of is the OHM test. I have about 400k OHM's but not sure what the specs of my sensor are....where might I find this spec?
The engine runs fine and VTEC kicks in around 5800-6K RPM's....so it is not going into limp mode. I have tried the ECU reset and the light will come on after idling for about 5 seconds. I do not have another distributor to try out. What I was wondering was, has anyone had this problem before and if so, how did you resolve it?
My timing is spot on...double checked everything and I cannot seem to find out what is going on. The car is not in limp mode and accelerates and pulls ok....I just installed the p30 this weekend, I was running a chipped P28 tuned with crome, the tune was just an AFR tune based on my wideband. I want to use the P30 for emissions reason and tuning later...but, much later. I had no issues with the P28 as far as CEL's go.
If you can help great and if not no biggie. Thanks.
B16a (JDM)
P30 (JDM)
Pretty much all stock engine....car is a 1992 VX hatch...I know the wiring harness on this car is different than others...and I have double checked my wiring and all of it is good.
Ok, everything checks out with my multimeter and I do not have an oscilloscope. The only test I am not sure of is the OHM test. I have about 400k OHM's but not sure what the specs of my sensor are....where might I find this spec?
The engine runs fine and VTEC kicks in around 5800-6K RPM's....so it is not going into limp mode. I have tried the ECU reset and the light will come on after idling for about 5 seconds. I do not have another distributor to try out. What I was wondering was, has anyone had this problem before and if so, how did you resolve it?
My timing is spot on...double checked everything and I cannot seem to find out what is going on. The car is not in limp mode and accelerates and pulls ok....I just installed the p30 this weekend, I was running a chipped P28 tuned with crome, the tune was just an AFR tune based on my wideband. I want to use the P30 for emissions reason and tuning later...but, much later. I had no issues with the P28 as far as CEL's go.
If you can help great and if not no biggie. Thanks.
Last edited by ambryatim; Apr 9, 2013 at 08:20 AM.
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