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.
Medium severity. Can I keep driving?Yes, you can normally drive in moderation, but get it repaired soon: you will use more fuel and the catalytic converter can be damaged over time.
Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines. Sensor 1 is the oxygen sensor before the catalytic converter.
Symptoms
- Malfunction indicator lamp on after two trips
- Usually no noticeable change in driving behaviour
- Bank 2 fuel trim values may look unusual
Most likely causes
- Bank 2 upstream wide-band sensor aged or contaminated
- Exhaust leak on bank 2 ahead of the sensor
- Damaged sensor lead or connector on bank 2
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: easy
- It affects emissions.
What each character of P2298 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 2: Fuel injection
- 98: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2298?
Yes, you can normally drive in moderation, but get it repaired soon: you will use more fuel and the catalytic converter can be damaged over time.
What causes code P2298?
The most common causes are: bank 2 upstream wide-band sensor aged or contaminated; exhaust leak on bank 2 ahead of the sensor; damaged sensor lead or connector on bank 2.
Related codes
- P2297O2 Sensor Out of Range During Deceleration (Bank 1 Sensor 1)
- P0150O2 Sensor Circuit Bank 2 Sensor 1
- P0153O2 Sensor Circuit Slow Response Bank 2 Sensor 1
- P2197O2 Sensor Signal Biased/Stuck Lean (Bank 2, Sensor 1)
- P2198O2 Sensor Signal Biased/Stuck Rich (Bank 2, Sensor 1)
- P2A03O2 Sensor Circuit Range/Performance Bank 2 Sensor 1
- P2240O2 Sensor Positive Current Control Circuit/Open (Bank 2 Sensor 1)
Sources
- gsi.ext.gm.com: 2005file13
- gsi.ext.gm.com: 2005file14
- gsi.ext.gm.com: 24OBDG07
- law.cornell.edu: 13 CCR 1968.2
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.