Error Codes 14 & 21

dannydavi · 04-13-2007, 04:43 AM

hey guys im speaking with a live rep on a parts site and she wants to know if i want front of cat O2 sensor or what? i really dont know. im assuming front of cat.. any info?

dannydavi · 04-13-2007, 05:47 AM

i found a diagram in the TSRM which labels the O2 sensor in front of the (TWC) three way catalyst. Does that mean front of cat.. hmm.

dcrusupra · 04-13-2007, 08:45 AM

The O2 sensor is in front of the cat. And I have a code 14 right now. I'm going to check the ignitor and the coil pack tomorrow to see which is bad.

A couple of helpful links....

How to check ignition coil
How to check ignitor

IHateHacks · 04-13-2007, 01:14 PM

Only 1988 and later California models have a sub-oxygen sensor. And even if you did have one and it was throwing a code, it would be code 27.

The O2 you want is in front of the cat. The one that you don't have unless yours is an 88 cali model, the sub O2 sensor, is AFTER the cat.

dannydavi · 04-13-2007, 07:03 PM

thanks, so before cat is what i figured but the online help kinda threw that one at me, and let me know how your code 14 goes, thanks.

dannydavi · 04-20-2007, 12:59 AM

so i replaced my O2 sensor let it run for a bit then tested again, still getting error codes, so i disconected battery terminals then reconnected, did diagnosis and got all blinks... so both codes went away after i did the reset...

IHateHacks · 04-20-2007, 01:57 AM

So you cleared the codes and got 4 blinks a second. Thats good, it means everything is working.

Now drive it 100 miles or so and recheck the codes.

04-13-2007, 04:43 AM	#1
dannydavi 12psi boost Join Date: Mar 2007 Location: Sacramento, Ca Posts: 373	hey guys im speaking with a live rep on a parts site and she wants to know if i want front of cat O2 sensor or what? i really dont know. im assuming front of cat.. any info? __________________ '86.5 Supra - A/T - N/A - JDM Useful Sites: ToyoDIY.com ToyotaPart.com MKIIITSRM

04-13-2007, 05:47 AM	#2
dannydavi 12psi boost Join Date: Mar 2007 Location: Sacramento, Ca Posts: 373	i found a diagram in the TSRM which labels the O2 sensor in front of the (TWC) three way catalyst. Does that mean front of cat.. hmm. __________________ '86.5 Supra - A/T - N/A - JDM Useful Sites: ToyoDIY.com ToyotaPart.com MKIIITSRM

04-13-2007, 08:45 AM	#3
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	The O2 sensor is in front of the cat. And I have a code 14 right now. I'm going to check the ignitor and the coil pack tomorrow to see which is bad. A couple of helpful links.... How to check ignition coil How to check ignitor __________________ New Rebuild My CarDomain

04-13-2007, 07:03 PM	#5
dannydavi 12psi boost Join Date: Mar 2007 Location: Sacramento, Ca Posts: 373	thanks, so before cat is what i figured but the online help kinda threw that one at me, and let me know how your code 14 goes, thanks. __________________ '86.5 Supra - A/T - N/A - JDM Useful Sites: ToyoDIY.com ToyotaPart.com MKIIITSRM

04-20-2007, 12:59 AM	#6
dannydavi 12psi boost Join Date: Mar 2007 Location: Sacramento, Ca Posts: 373	so i replaced my O2 sensor let it run for a bit then tested again, still getting error codes, so i disconected battery terminals then reconnected, did diagnosis and got all blinks... so both codes went away after i did the reset... __________________ '86.5 Supra - A/T - N/A - JDM Useful Sites: ToyoDIY.com ToyotaPart.com MKIIITSRM

04-13-2007, 01:14 PM	#4
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Only 1988 and later California models have a sub-oxygen sensor. And even if you did have one and it was throwing a code, it would be code 27. The O2 you want is in front of the cat. The one that you don't have unless yours is an 88 cali model, the sub O2 sensor, is AFTER the cat.

04-20-2007, 01:57 AM	#7
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	So you cleared the codes and got 4 blinks a second. Thats good, it means everything is working. Now drive it 100 miles or so and recheck the codes.