On my 2005 Honda Civic Hybrid, I get the following codes. I don't know if they are all independent, or, somehow related to each other. Hoping someone has some experience with this.

P0139
http://www.obd-codes.com/p0139
Oxygen Sensor Circuit Slow Response (Bank1, Sensor2)

What does that mean?
This involves the rear oxygen sensor on the driver's side. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use.

Symptoms
You will likely not notice any drivability problems, although there may be symptoms.

Causes
A code P0139 may mean that one or more of the following has happened:

• The oxygen sensor is faulty
• The wiring to the sensor is broken / frayed
• There is an exhaust leak
• Possible Solutions

The simplest thing to do is to reset the code and see if it comes back.

If the code comes back, the problem is more than likely the rear driver's side oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions:

• Check and fix any exhaust leaks
• Check for wiring problems (shorted, frayed wires)
• Check the frequency and amplitude of the oxygen sensor (advanced)
• Check for a deteriorating / contaminated oxygen sensor, replace if necessary
• Check for inlet air leaks
• Check the MAF sensor for proper operation

So, the most likely culprit for this particular code is a new O2 sensor.


However, these I can't get a complete answer on:
P1542
P1130
P1600

 

Lazy o2. Switch sensor and the rest of the other codes will go away also.

 

That is what I am hoping.

I've heard it's a wideband, not a narrowband. I looked on RockAuto, and am overwhelmed by the choices.

Do you know what specific part number addresses this particular sensor?

 

No. I only know how to fix cars n let the parts guy figure that out.

 

Good answer.


These are my options; hopefully someone else who has been through this knows which one it is:

An upstanding dealer? Well, there goes that idea.

Those are good ideas, I'll try and get that done.

In the meanwhile, Here are the Denso O2 sensors at RockAuto...which one are they talking about?


DENSO Part # 2344613 {#2344365} OE Style Loc. After Secondary Cat; Exc. Calif.; O.E. Quality Replacement Sensor; Downstream
$43.79


DENSO Part # 2349005 {#36531PLE003} OE Style; OE-TYPE OXYGEN SENSOR
Exc. Calif.; DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor; Upstream Calif.; DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor; Upstream
$95.79


DENSO Part # 2344224 OE Style
Loc. After Primary Cat; Exc. Calif.; O.E. Quality Replacement Sensor; Downstream
$109.79


DENSO Part # 2344352 OE Style
Calif.; O.E. Quality Replacement Sensor; Downstream
$203.79