Had this code pop up yesterday. Research is showing that it's no big deal just time to replace the o2 sensor. Anything I should look at or check out before replacing the o2?

 

Possible causes - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
'- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)

Read more: http://www.autocodes.com/p0141_ford.html

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem

Read more: http://www.autocodes.com/p0141_ford.html

When is the code detected? During testing the oxygen sensor (HO2S) heaters are checked for open and short circuits and exessive current draw

Read more: http://www.autocodes.com/p0141_ford.html

P0141 Ford Description Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM). In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground. The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

Read more: http://www.autocodes.com/p0141_ford.html

 

Quote:

Originally Posted by jsack12

Had this code pop up yesterday. Research is showing that it's no big deal just time to replace the o2 sensor. Anything I should look at or check out before replacing the o2?

In most cases with just the one DTC 141 (no 135,155 0r 161 present as well) testing below a threshold, then the HO2S heater is deemed to have degraded. Could be that the ceramic element on the HO2S sensor has cracked. Happens with age..degrade then crack. Yea, as long as that is the only O2 DTC present.

 

So weird, today it went back off and hasn't came back

 

Is this drivers side or passenger side o2 sensor? I thought it was drivers side after the cats but I could be wrong

 

Anybody know? Like to replace this soon

 

Bank 1 is drivers side, Bank 2 is passenger.

 

Are you sure about that? lol

 

I guess user white didn't catch this yet, so I'll fix it, -

Bank 1 is passenger side Bank 2 is drivers.

 

User mbb posted 4 links that would answer that real quick, - I guess you missed all of them lol. If that was to overwhelming, just look up the DTC (PO141) in the DTC lists. It's stickied near the top of the thread list. Might as well do that, it'll make it easier the next time. I think the DTC list is the 4th thread down.

Also, it's best to replace BOTH upstream O2's at the same time. Bank 1 and 2 upstream O2's.