TLOHTL

Confirmed DTCs : P0141 HO2S B1 S2 HEATER CIRCUIT MALFUNCTION

Car : 2005 Acura Tl 6spd Navi

I just need to confirm if I have the right part to order?

https://www.acurapartssource.com/acura-tl-parts.html
Year : 2005
Emission system
Emission components
rr oxygen sensor : $51.79 (Image 6)

Also how many o2 sensors are there?
1 on rear? 2 on front? Laf front? is that the one on top which is visible in front?
Sorry for all the question....

THANKS

Turbonut

iTrader: (1)

Looks like Front, Secondary (Rear) O2 sensor:
36532-RCA-A02
4 Sensors
LAF-Lean Air Fuel
36542-RKB-004-Rear Secondary
36531-RDM-A01-Front LAF Bank 1
36531-RCA-A02 -Front LAF Bank 2

Tough to read, but that's my take.

nfnsquared

Gents, I think it's a different part #....

B1 S2:

Bank 1, Sensor 2. Bank one is the side of the exhaust associated with cylinder 1, or the rear bank. Sensor 2 is the sensor after the cat (bottom or downstream sensor).

Part # 36542-RCA-A01

It's #13 in this diagram:

http://www.acurapartswarehouse.com/P...gPicture=False

I'd first reset the CEL and see if it comes back. Could just be a spurious signal. SM says to check fuse #19 in under hood fuse box and fuses #4 and #23 in under dash fuse box. If any one them are blown, it indicates a short somewhere in the sensor wiring harness. Troubleshooting procedure basically searches for shorts or opens and then to replace the sensor if no shorts/opens...

Turbonut

iTrader: (1)

Got me, you are correct, similar to Nissan, number 1 plug rear, so bank 1 is rear.

TLOHTL

Thanks nfnsquared that's the same part # I was thinking. It's weird I had a recall at dealer for p/s hose and after they did that I get this check engine light. I told them that the check engine light was not on prior they scanned it and came up with s2 bank1 permanent and s2 bank1 temporary codes :s

nfnsquared

Ahhhh....My guess is that they knocked something loose. The PS hose runs back by the rear cat. I'd take it back to the dealer and have them check the wiring.

nfnsquared

^^^ Here's an excerpt from the 8 page PS hose recall procedures:

nightacura

Does anybody have instruction or DIY? i look through the forum i cannot find it.

thanks, Kelvin.