Codes 63, 13 and 31 - ZR-1 Net Registry Forums

RICHARD TILL · 04-24-2014

Thanks in advance for any advise or comments. Several months ago i had a intermittent code 63 which is the right oxygen sensor. I swapped that sensor to the left side and got code 13 . Yesterday i replaced the left sensor with DENSO 234-3094 that i purchased from Rock Auto. Supposed to be an exact replacement. As soon as i started the engine the service engine light came on. This time its code 31. I have the ST-364-90PSID manual and it states that its the cam sensor. The manual said to probe ECM harness pin D3, crank the engine over and read the meter. Big mistake i guess but i didn`t do that. Gotta dig and find which wire on the brown connector D3 is. I skipped to connecting a test light between terminals A and C of the supply side of the connector to the cam sensor. The test light did light up and instructions say that its a faulty connection or bad cam sensor. My connection is good. I know that i need to go back to the first test procedure but heres the tricky part. Just for the heck of it i reconnected the old oxygen sensor, left it hanging loose, started the engine and didn`t get an instant code 13 like i did before. How could that be? Could a wrong or faulty new sensor cause this?

GOLDCYLON · 04-24-2014

Did you clear the codes after the install of the O2 sensor? IF you didnt you still might have a code retained. Just an idea

XfireZ51 · 04-24-2014

Clear the codes first. See which one comes back. Interesting you're getting both O2 sensor codes.

RICHARD TILL · 04-24-2014

I`m not getting both codes now. Only get code 31 when the new left side oxygen sensor is hooked up. To clear the codes i unhooked the battery terminal for about 30 minutes, reattached and observed code 12 with no others.

XfireZ51 · 04-24-2014

Quote:

Originally Posted by RICHARD TILL

I`m not getting both codes now. Only get code 31 when the new left side oxygen sensor is hooked up. To clear the codes i unhooked the battery terminal for about 30 minutes, reattached and observed code 12 with no others.

Are u using an extension?

RICHARD TILL · 04-25-2014

Extension? I don`t think so but i`m not sure what you are asking.

XfireZ51 · 04-25-2014

Richard,

You have headers? To clarify, what codes do you currently have? Did u change O2s w battery connected?

RICHARD TILL · 04-25-2014

No headers. The car is bone stock with 121k miles. I immediately get the code 31 after starting the engine. No codes with the old oxygen sensor connected and hanging loose. Front of car is on jack stands. I never do anything electrical without disconnecting the negative battery cable.

scottfab · 04-25-2014

Quote:

Originally Posted by RICHARD TILL

No headers. The car is bone stock with 121k miles. I immediately get the code 31 after starting the engine. No codes with the old oxygen sensor connected and hanging loose. Front of car is on jack stands. I never do anything electrical without disconnecting the negative battery cable.

Battery connected won't matter.

Something's just not right. O2 sensor causing a CSS error?
Clear you mind.
Start over.

Clearing codes only takes 10 sec. No need for 30min.
How are you reading codes? Counting flashes?
Redo and recount. Remember 12 is at the end of all
before it repeats.

When replicating the 31 and reconnecting the bad sensor
to see the 31 go away make sure to then connect the new
sensor back up and see the 31 come back (so called capping run)
Puzzles are meant to be solved

04-24-2014	#1
RICHARD TILL Join Date: Aug 2005 Location: Iuka, Mississippi 38852 Posts: 756	Codes 63, 13 and 31 Thanks in advance for any advise or comments. Several months ago i had a intermittent code 63 which is the right oxygen sensor. I swapped that sensor to the left side and got code 13 . Yesterday i replaced the left sensor with DENSO 234-3094 that i purchased from Rock Auto. Supposed to be an exact replacement. As soon as i started the engine the service engine light came on. This time its code 31. I have the ST-364-90PSID manual and it states that its the cam sensor. The manual said to probe ECM harness pin D3, crank the engine over and read the meter. Big mistake i guess but i didn`t do that. Gotta dig and find which wire on the brown connector D3 is. I skipped to connecting a test light between terminals A and C of the supply side of the connector to the cam sensor. The test light did light up and instructions say that its a faulty connection or bad cam sensor. My connection is good. I know that i need to go back to the first test procedure but heres the tricky part. Just for the heck of it i reconnected the old oxygen sensor, left it hanging loose, started the engine and didn`t get an instant code 13 like i did before. How could that be? Could a wrong or faulty new sensor cause this?

04-24-2014	#2
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: Codes 63, 13 and 31 Did you clear the codes after the install of the O2 sensor? IF you didnt you still might have a code retained. Just an idea __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

04-24-2014	#3
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: Codes 63, 13 and 31 Clear the codes first. See which one comes back. Interesting you're getting both O2 sensor codes. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

04-24-2014	#4
RICHARD TILL Join Date: Aug 2005 Location: Iuka, Mississippi 38852 Posts: 756	Re: Codes 63, 13 and 31 I`m not getting both codes now. Only get code 31 when the new left side oxygen sensor is hooked up. To clear the codes i unhooked the battery terminal for about 30 minutes, reattached and observed code 12 with no others.

04-25-2014	#6
RICHARD TILL Join Date: Aug 2005 Location: Iuka, Mississippi 38852 Posts: 756	Re: Codes 63, 13 and 31 Extension? I don`t think so but i`m not sure what you are asking.

04-25-2014	#7
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: Codes 63, 13 and 31 Richard, You have headers? To clarify, what codes do you currently have? Did u change O2s w battery connected? __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

04-25-2014	#8
RICHARD TILL Join Date: Aug 2005 Location: Iuka, Mississippi 38852 Posts: 756	Re: Codes 63, 13 and 31 No headers. The car is bone stock with 121k miles. I immediately get the code 31 after starting the engine. No codes with the old oxygen sensor connected and hanging loose. Front of car is on jack stands. I never do anything electrical without disconnecting the negative battery cable.

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