Fuel and air code
P2098: Post-catalyst fuel trim too lean (bank 2)
How much to fix P2098? Typically $90–$460.
Wide range: this job varies a lot. Itemize your quote for a better answer.
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $5 | $60 |
| Labor: 0.8 to 2.5 hours × $110 to $150 an hour | $88 | $375 |
| Fees: shop supplies, disposal, diagnostics | $0 | $25 |
| Total, rounded | $90 | $460 |
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, vacuum leak repair. Which repair your car needs depends on a proper diagnosis.
The oxygen sensor behind the catalytic converter on the side without cylinder 1 says the exhaust is lean, and it has stayed that way long enough that the computer's long-term fuel correction ran out of room. Extra air getting into the engine or exhaust is the common cause.
- Safe to drive?
- Short trips only
- Most common cause
- Vacuum or intake leak on bank 2 side
Usually safe for short drives. Get it checked soon, since a lean engine can run hot and misfire.
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What you may notice
- Rough idle
- Hesitation
- Lower fuel economy
- Check-engine light
Common causes, most likely first
- Vacuum or intake leak on bank 2 side
- Dirty or failing MAF sensor
- Weak fuel pump or clogged filter
- Exhaust leak before the sensor
Check this first
Listen for a hissing sound near the intake. Ask if the exhaust has been checked for leaks upstream of the rear sensor.
Other repairs that sometimes fix P2098
| Repair | Typical range, US |
|---|---|
| Mass airflow sensor replacement | $120 to $390 |
| Oxygen sensor replacement (one sensor) | $100 to $350 |
| Fuel pump replacement | $370 to $1,075 |
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).
P2098 questions
Why does it say post-catalyst?
The sensor sits after the converter and is used for slower, long-term fuel adjustments, not the quick ones. That is why the code says post-catalyst, and why it takes a while to appear.
Could the O2 sensor be bad?
It could be, but check for leaks first, since the sensor is often just reporting the truth. An exhaust leak ahead of it or a vacuum leak is far more common than a bad sensor.
Is this expensive?
It depends entirely on the cause. A cracked vacuum hose is cheap to fix, while a weak fuel pump or a leaking intake gasket costs much more. A smoke test helps find the cause.
How much does it cost to fix P2098?
The most common fix, vacuum leak repair, has a typical range of $90 to $460 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 | $100 to $530 |
| New York City area | $100 to $500 |
| Los Angeles area, California | $100 to $510 |
| Chicago area, Illinois | $95 to $480 |
| Houston area, Texas | $85 to $450 |
| Dallas-Fort Worth area, Texas | $85 to $450 |
| Phoenix area, Arizona | $90 to $460 |
| Atlanta area, Georgia | $95 to $480 |
| Miami area, Florida | $85 to $460 |
| Seattle area, Washington | $100 to $510 |
Related codes
- P2096: Fuel mix too lean after catalytic converter (bank 1)
- P2097: Fuel mix too rich after catalytic converter (bank 1)
- P0174: Engine getting too much air or too little fuel (bank 2)
More fuel and air 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.