P2298 code meaning
O2 Sensor Out of Range During Deceleration (Bank 2 Sensor 1)
Powertrain system Generic code P22xx codes Check engine light
What P2298 means
P2298 is the bank 2 version of P2297 and exists only on engines with two cylinder banks, each with its own upstream oxygen sensor. Three GM tables show the two readings of the code. The 2005 3.5L V6 (L66) tests during fuel cut-off with coolant above 69 °C and below 2,200 rpm, faulting a wide-band output above 4.5 V or below 2.9 V, over two drive cycles. The Bosch-managed 2005 V6 (LP1/LY7) works the other way round and flags a signal above 3.7 V for 10 s while every injector is firing and the target is richer than lambda 1.6. GM's 2024 tables (24OBDG07) set it for a lambda equivalent above 12 from the corrected pump current with the ceramic hotter than 655 °C, 10 s, two trips. No bulletin names P2298. Bank 2 is the side without cylinder 1.
P2298 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2298
- Malfunction indicator lamp on after two trips
- Usually no noticeable change in driving behaviour
- Bank 2 fuel trim values may look unusual
Common causes of P2298
- Most likelyBank 2 upstream wide-band sensor aged or contaminated
- PossibleExhaust leak on bank 2 ahead of the sensor
- Less likelyDamaged sensor lead or connector on bank 2
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Oxygen sensor
What each part of P2298 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 2 | Area: fuel and air metering (injector circuit). |
| 98 | The exact fault in that area. |
What to do next
- Note P2298 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2298
What does P2298 mean?
P2298 means "O2 Sensor Out of Range During Deceleration (Bank 2 Sensor 1)". P2298 is the bank 2 version of P2297 and exists only on engines with two cylinder banks, each with its own upstream oxygen sensor. It is a generic code, so it means the same on every make.
Is it safe to drive with P2298?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2298 fail an emissions test?
Yes, it can. P2298 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2298 to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P2298 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.