Emissions code
P0141: Oxygen sensor heater fault (bank 1, after converter)
How much to fix P0141? Typically $100–$350.
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $40 | $180 |
| Labor: 0.6 to 1 hours × $110 to $150 an hour | $66 | $150 |
| Fees: shop supplies, disposal, diagnostics | $0 | $15 |
| Total, rounded | $100 | $350 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in the US, $27.13 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
This is the range for the most common fix, oxygen sensor replacement (one sensor). Which repair your car needs depends on a proper diagnosis.
The sensor behind the catalytic converter has its own heater so it can read accurately soon after a cold start. The computer sent power to that heater and the circuit did not respond as it should. Until it works, the computer cannot trust the sensor's reading of the converter.
- Safe to drive?
- Usually yes, for now
- Most common cause
- Failed rear sensor heater
Safe to drive.
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What you may notice
- Check-engine light on
- No noticeable driving change
- Failed emissions readiness check
Common causes, most likely first
- Failed rear sensor heater
- Open wiring
- Blown fuse
- Plug corrosion
- Computer fault
Check this first
Ask whether the shop tested the heater fuse, the plug and the heater resistance before replacing the sensor. A corroded connector or a blown fuse costs less to fix than a new sensor.
Other repairs that sometimes fix P0141
| Repair | Typical range, US |
|---|---|
| Diagnostic scan (check engine light) | $55 to $250 |
| Vacuum leak repair | $90 to $460 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Many states require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
P0141 questions
Is it related to my catalytic converter?
Only indirectly. This sensor checks that the converter is working, so a bad one can set off a false converter code later. Fixing it first helps avoid replacing a converter that is fine.
Will the code return after replacement?
Not if the wiring is good. But dirty or corroded plugs and a shorted wire can burn out a new sensor right away, so the shop should check the circuit before installing the part.
Is it hard to replace?
Usually easier than the front sensors, since it sits under the car behind the converter and is easier to reach. A rusted fitting can still add labor, so ask about that on the estimate.
How much does it cost to fix P0141?
The most common fix, oxygen sensor replacement (one sensor), has a typical range of $100 to $350 across the US. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Typical range in 10 metro areas
Only the labor rate changes between cities. Same parts, same hours.
| Area | Typical range, estimate |
|---|---|
| Boston area, Massachusetts | $110 to $370 |
| New York City area | $110 to $360 |
| Los Angeles area, California | $110 to $370 |
| Chicago area, Illinois | $100 to $350 |
| Houston area, Texas | $100 to $340 |
| Dallas-Fort Worth area, Texas | $100 to $340 |
| Phoenix area, Arizona | $100 to $350 |
| Atlanta area, Georgia | $100 to $350 |
| Miami area, Florida | $100 to $350 |
| Seattle area, Washington | $110 to $370 |
Related codes
- P0036: Oxygen sensor heater circuit fault (bank 1, after converter)
- P0420: Catalytic converter not working well (bank 1)
- P0137: Rear oxygen sensor reads low (bank 1, after converter)
- P0138: Rear oxygen sensor reads high (bank 1, after converter)
More emissions codes
Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.