Check Engine Code P1166/1167

[Teman62]

01 Honda Accord 2 dr. Coupe 4 cy. ULEV
My Check Engine light came on and a local mechanic told and showed me these 2 codes.

Could anyone please tell me what these codes mean exactly.
What needs to be checked and or replaced

P1166 Air/Fuel Ratio (A/F) Sensor 1 (Sensor 1) Heater sytem Electrical Problem
P1167 Air/Fuel Ratio (A/F) Sensor 1 (Sensor 1) Heater sytem Malfuction.


Modified by Teman62 at 10:44 AM 8/21/2008

[GhostAccord]

P1166 Heated Oxygen Sensor 1 (Primary HO2S) Heater Circuit Malfunction
P1167 AFR Sensor 1 Heater System Malfunction.

Test / Replace your primary O2 sensor

[Mr Yamada]

there is an electric heater in the O2 sensor to make the sensor read more accurately faster after engine start up.
Both those codes are pointing to a problem of the heater circuit; possibly no voltage to the heater or the heater is bad in the sensor.
At the sensor plug the red[pin2] and blue [pin1] wires go to the heater circuit, on the harness side there should be 12V within 80 seconds of engine start.
The corresponding terminals to the heater circuit should show about 10-40 ohms resistance across the heater.
Check the ECM/Cruise Control 15 amp fuse in the drivers side dash fuse box;
Also check the passenger side dash fuse box 20 amp LAF Heater fuse

[Teman62]

Thanks MR Yamada
Your info is very helpful. I will check this in A.M. ...just got home from work 9:30pm. If it is one of the fuses... just replace and reset code?
I'm guessing if part of 02 sensor (heater) I have to replace the sensor?
Last question which OEM aftermarket 02 sensor is good for my car.
Thank You


Modified by Teman62 at 6:34 PM 8/21/2008

[Teman62]

Thanks Ghost
I figured it maybe something with 02 sensor (front) going to check in a.m.

[Teman62]

Ok, found out today that it is the front 02 sensor that needs to be replaced.
Could anyone tell me where I can get one for under $200.00 . This is the sensor located on the exhaust manifold (ULEV 01 ACCORD EX 4cyl.)
Thanks


Modified by Teman62 at 6:27 PM 8/22/2008

[oem_cg3]

Sent ya a PM. Hope it helps.

[Teman62]

oe-cg3
How do I retrieve your pm.
I can't find it!
Thanks

[oem_cg3]

http://cgi.ebay.com/ebaymotors...photo
Here... hope this helps

[Teman62]

Thanks oem
I ended up ordering from J.C. Whitney (bosch o2 sensor) for $148.00 with
free shipping.

[oem_cg3]

Why not OEM Honda?

[Teman62]

For some some strange reason my car needs the sensor for an 02 model.
I ended up having to get it local as the Info given by J.C. Whitney was
incorrect (cancelled order). They told me they could ship overnight, when in fact that was wrong.
This part was coming directly from factory and for some unexplained reason
they can't ship overnight from there.
Anyway, car is back to normal and thanks for all your help.