DTC Codes P0420, P0152, P1351

Wyley87 · 09-15-2009, 02:56 AM

ok I have all these codes in my truck

P0420
P0152
P1351

I have tried to do research on these codes but i can't find anything that says "this is the problem" Autozone and Oriellys don't have a clue and want to sell my stuff that "MIGHT" fix it. I've had P1351 the longest a guy with a snap-on computer (One of those Chevy/GMC Gods that know a lot of stuff) told me tp check my IAC valve, I'm replacing that tomorrow so I'll let yall know about that one. the P0420 code, I've had before, i replaced all my O2 sensors and the cat and put some flow masters on it (i needed exhaust anyway) code went away for a while and the recently came back. As for the P0152 code that one is new. Any Ideas?

crabtruck · 09-15-2009, 04:39 AM

96-GMC C1500 305ci 2WD
K&N FIPK Cold Air Intake
P0152 - O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P1351 - IDM Input Circuit Malfunction/ Ignition Coil Control Circuit High Voltage

Could you have poor connections at harness?

bradrhale · 09-15-2009, 03:29 PM

no such thing as "this is your problem" when dissecting a code. its primary function is to tell you what the sensors tell it. but with this info, you can deduce what is wrong.
how long did the 0421 and 0152 code go out for??

Wyley87 · 09-15-2009, 06:59 PM

to tell you the truth i really don't remember. my CEL don't work right, the bulb is not burned out or anything like that i think it just a bad connection idk. i got a new on one now its the number 4 cylinder misfire code. which me and my dad are going to look at tommarrow so I'll keep yall posted

bradrhale · 09-15-2009, 07:06 PM

now you have a p0304 code but what others do you have?? the same ones as posted above or what??

crabtruck · 09-15-2009, 07:29 PM

You guys are walking in the same neighborhood
just fyi

DTC Codes P0420, P0152, P1351

SES Light Flashing need help

Wyley87 · 09-15-2009, 09:01 PM

yea i still have the other ones they never went away. but what i was saying was i got two more codes today the misfire and a MAP sensor code. I fixed the MAP code but now i gotta go to my dads to try to figure out about the misfire code. I think it might be and injector but idk Ima do a compression test but i don't have the tool he dose. As far as the other codes i just don't know

1500cheyenne96 · 09-15-2009, 09:17 PM

Hey Wyley i've been having similar problems with my 96 K1500 as well see SES light flashing need help. I can't offer u any help at this time as i'm still trying to figure it all out my self. I guess what i'm asking is if u find anything please let me know and vise versa.

Wyley87 · 09-15-2009, 11:13 PM

yea sure man no problem, thats what we're all here for

Wyley87 · 09-17-2009, 12:49 AM

Ok update on this. Today I was headed over to my dad’s house to work on my truck. I had cleared all codes before leaving and left the scanner hooked up and put it in the cup holder, guesses what happened.....NOTHING!! The misfire just went away it ran good. However the 420 and 351 codes both came back. But I think I know what’s causing the 420 one at least. Let me explain, I had stopped at the parts house and picked up some sea foam for my bro and got me a can as well. sucked it up thought the vac line and let it "soak" about 10 min. came back did the rev thing, my bro just happened to be standing in front of the truck with my hood open and saw the white smoke coming out where the exhaust manifold bolts to the pipes. Well ima take it up to the exhaust shop that installed my mufflers and see what they can do about it cuz I think those are under some kind of warranty. As for the 351 I have NO idea. Id replace the coil to see if that might fix it but I don't have the extra money to do the "hit and miss" routine. Any ideas what could be causing the 351 code?

09-15-2009, 02:56 AM	#1
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	DTC Codes P0420, P0152, P1351 ok I have all these codes in my truck P0420 P0152 P1351 I have tried to do research on these codes but i can't find anything that says "this is the problem" Autozone and Oriellys don't have a clue and want to sell my stuff that "MIGHT" fix it. I've had P1351 the longest a guy with a snap-on computer (One of those Chevy/GMC Gods that know a lot of stuff) told me tp check my IAC valve, I'm replacing that tomorrow so I'll let yall know about that one. the P0420 code, I've had before, i replaced all my O2 sensors and the cat and put some flow masters on it (i needed exhaust anyway) code went away for a while and the recently came back. As for the P0152 code that one is new. Any Ideas? __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

09-15-2009, 06:59 PM	#4
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	to tell you the truth i really don't remember. my CEL don't work right, the bulb is not burned out or anything like that i think it just a bad connection idk. i got a new on one now its the number 4 cylinder misfire code. which me and my dad are going to look at tommarrow so I'll keep yall posted __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

09-15-2009, 09:01 PM	#7
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	yea i still have the other ones they never went away. but what i was saying was i got two more codes today the misfire and a MAP sensor code. I fixed the MAP code but now i gotta go to my dads to try to figure out about the misfire code. I think it might be and injector but idk Ima do a compression test but i don't have the tool he dose. As far as the other codes i just don't know __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

09-15-2009, 11:13 PM	#9
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	yea sure man no problem, thats what we're all here for __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

09-17-2009, 12:49 AM	#10
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	Ok update on this. Today I was headed over to my dad’s house to work on my truck. I had cleared all codes before leaving and left the scanner hooked up and put it in the cup holder, guesses what happened.....NOTHING!! The misfire just went away it ran good. However the 420 and 351 codes both came back. But I think I know what’s causing the 420 one at least. Let me explain, I had stopped at the parts house and picked up some sea foam for my bro and got me a can as well. sucked it up thought the vac line and let it "soak" about 10 min. came back did the rev thing, my bro just happened to be standing in front of the truck with my hood open and saw the white smoke coming out where the exhaust manifold bolts to the pipes. Well ima take it up to the exhaust shop that installed my mufflers and see what they can do about it cuz I think those are under some kind of warranty. As for the 351 I have NO idea. Id replace the coil to see if that might fix it but I don't have the extra money to do the "hit and miss" routine. Any ideas what could be causing the 351 code? __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

09-15-2009, 04:39 AM	#2
crabtruck Senior Member Join Date: Jul 2007 Location: on your 9 Posts: 3,364	96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake P0152 - O2 Sensor Circuit High Voltage (Bank 2 Sensor 1) P0420 - Catalyst System Efficiency Below Threshold (Bank 1) P1351 - IDM Input Circuit Malfunction/ Ignition Coil Control Circuit High Voltage Could you have poor connections at harness?

09-15-2009, 03:29 PM	#3
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,024	no such thing as "this is your problem" when dissecting a code. its primary function is to tell you what the sensors tell it. but with this info, you can deduce what is wrong. how long did the 0421 and 0152 code go out for??

09-15-2009, 07:06 PM	#5
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,024	now you have a p0304 code but what others do you have?? the same ones as posted above or what??

09-15-2009, 07:29 PM	#6
crabtruck Senior Member Join Date: Jul 2007 Location: on your 9 Posts: 3,364	You guys are walking in the same neighborhood just fyi DTC Codes P0420, P0152, P1351 SES Light Flashing need help

09-15-2009, 09:17 PM	#8
1500cheyenne96 Senior Member Join Date: Sep 2009 Location: MIchigan Posts: 195	Hey Wyley i've been having similar problems with my 96 K1500 as well see SES light flashing need help. I can't offer u any help at this time as i'm still trying to figure it all out my self. I guess what i'm asking is if u find anything please let me know and vise versa.

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