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Why is my inspect engine light on and also what does code P0141 mean?

What walk it typical if you have a P0141 code and also your check Engine light is on? P0141,“O2 Sensor Heater Circuit break down (Bank 1,Sensor 2),” meanssomething is preventingyour car’s bank 1 number 2 o2 sensor’s heated circuit indigenous workingcorrectly.

In this video, our mechanic reflects you how to inspect and also test your oxygen sensors, their circuits and wiring, fuses, and also other locations to help you figure the end what’s triggering the P0141 code.

Watch now:

Check Engine Light? O2 Sensor Heater Circuit malfunction – code P0141


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What is password P0141 and what does the mean?

When your automobile has a P0141 diagnostic troublecode, that meansthe boil circuit found inthe downstreamo2 sensor 2in financial institution 1ismalfunctioning.Our mechanic defines that boil circuit’s role beginning in ~ :17in the video above.

You are watching: Where is the o2 sensor heater circuit located

That boil circuit isn’t heating up,which method the o2 sensor itself may be faulty or failing, or the itscircuits,wiring,or connectorscould befaulty orbroken.A blown fuse orPowertrain control Module(PCM)issue could also prevent the circuit fromheating properly.

Can i drive with P0141? how serious is this code?

Depending on what’s causing the worry that motivated P0141,your engine may come to be stuck in “open loop”mode,which meansmore fuelis shed thanusual. It’s ideal to attend to a P0141 code as quickly as possibleto avoid various other related repairs.

What are common P0141 code symptoms?

Rough-running engine Poor fuel economy 

What room the common causes of P0141?

Power circuit wiring issue or damage, such as a wiring rest or miscellaneous else avoiding power from getting to the fuse boxBlown fusePCMcircuit rest or various other wiring issuePCM issueFaulty or failing bank 1, o2 Sensor 2 cook circuitFaulty or failing financial institution 1, o2 Sensor 2Remote starter not sending out power to the o2 sensor’s circuits
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How perform I diagnose and also fix code P0141?

Inspect and also run power circuit tests

You’llwant to turn your key to the on place (your cardoesn’thave to it is in running).Use a check light to check both o2 sensor fuses(depending on your vehicle, thesetwofuses will be referred to as fuse 1 and fuse 2 or fuse A and fuse B). Our mechanic walks friend through exactly how to execute this check at 1:44 in the video above.If the check light lamp up,you’llknow thatparticular fuseisn’tcausing the problemthat triggeredP0141.

If the strength circuit no working, there can be a break in the wiring, or an additional issue avoiding power from gaining to the fuse box, or you can even have a blown fuse.

InspectBank 1, Sensor 2’swiresand connectorfor fraying or damage

Our mechanic shows you how to locate your o2 sensors, and also the financial institution 1, o2 sensor 2 specifically, beginning at 2:17. The auto our mechanic functions on in the video has 4 o2 sensors: Two on the driver’s side and two on the passenger side. The bank 1 sensors are referred to as bank 1, Sensor 1, and Bank 1, Sensor 2; the financial institution 2 sensors: financial institution 2, Sensor 1, and also Bank 2, Sensor 2. 

CheckBank 1,Sensor 2’s wiring(2:59)—our mechanic noticessome “chafing” on the outside component of one wire, yet it doesn’t look like any of the wires room broken.

Also,inspect this sensor’s electrical connector (3:12). Disconnect the connector and look at its terminalsto see if castle look choose they’re spread out apart or green,either ofwhichindicatesan issue.

Use a test light to check the fuse to recognize if the problem is ground-related

With your an essential still on, usage a test light to check the ground (our mechanic mirrors you how to execute this beginning at 3:29).

Inspect and also runPCMcircuit tests

Use a multimeteror check lightto check the resistance

As our mechanic describes at 4:11, you could test the ground circuit using a multimeter, but the resultsaren’talwaysasaccurateas utilizing a test light (4:21).

If the test light doesn’t light up, this could meanthat yes a rest in the wiring, or that something is not correct internally in the PCM.

If both circuits room working,thenit’sthe oxygen sensor’sheated circuitthat’scausing the problem and triggering theP0141 code, i m sorry meansyou’llneed to replace that o2 sensor.

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In a instance when your auto hasall 4 heater circuit control codes(list castle here), you most likely don’t should replace allfour o2 sensors. It’s more likely that something else is bring about the problem, suchasan aftermarket remote starter not poweringthe circuits that turn on the controls.

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