Emissions code
P0130: Upstream oxygen sensor circuit problem (bank 1)
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $40 | $180 |
| Labor: 0.6 to 1 hours × $125 to $175 an hour | $75 | $175 |
| Fees: shop supplies, disposal, diagnostics | $0 | $15 |
| Total, rounded | $110 | $370 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $31.54 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 oxygen sensor in front of the catalytic converter on cylinder 1's bank is not giving a normal electrical signal. The computer uses it to set the fuel mixture, so without it, the computer falls back on a default and the engine runs less efficiently than it could.
- Safe to drive?
- Short trips only
- Most common cause
- Failed sensor
Drive gently to a shop. Mileage and emissions may worsen.
What you may notice
- Poor fuel economy
- Rough running
- Check-engine light
Common causes, most likely first
- Failed sensor
- Wiring damage
- Connector corrosion
- Exhaust leak
Check this first
Check the sensor wiring from the plug to the sensor for melted insulation, rubbing or a pulled connector, and look at the plug for corrosion. A damaged wire is a cheap repair compared with a new sensor.
Other repairs that sometimes fix P0130
| Repair | Typical range, Boston |
|---|---|
| Diagnostic scan (check engine light) | $60 to $290 |
| CAN bus wiring repair | $190 to $1,275 |
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. Massachusetts rules 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).
P0130 questions
Is it the same as P0131?
P0131 means the sensor voltage is low, which is a specific type of fault. P0130 is a general circuit fault, so the computer is saying the signal is wrong in some way, but not specifically low.
Is it urgent?
Not immediately. The car still runs, but fuel economy suffers and the catalytic converter can wear faster if the mix stays off. Plan to fix it in a few weeks.
Can the car run without it?
Yes, in a default mode where it uses a fixed fuel mixture. That keeps the engine going but costs mileage and raises emissions, so it is a short-term situation.
How much does it cost to fix P0130?
The most common fix, oxygen sensor replacement (one sensor), has a typical range of $110 to $370 in Boston. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
Related codes
- P0131: Oxygen sensor reads low voltage (bank 1, before converter)
- P0132: Oxygen sensor reads high voltage (bank 1, sensor 1)
- P0133: Oxygen sensor responding slowly (bank 1, before 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.