What Does P2298 Mean?
The upstream oxygen sensor on bank 2 is reading outside expected parameters during fuel deceleration cut-off events. This is the same condition as P2297 but affects the opposite cylinder bank in V-configuration engines.
Common Causes
40%
Degraded or contaminated oxygen sensor with slow response time
25%
Vacuum leak on bank 2 side affecting air/fuel mixture
20%
Exhaust leak upstream of bank 2 sensor 1
15%
Bank 2 fuel injector issue causing improper deceleration behavior
Diagnostic Steps
1
Step 1: Monitor bank 2 sensor 1 live data during deceleration events with scan tool
2
Step 2: Inspect bank 2 exhaust manifold and pipes for leaks using visual and audible inspection
3
Step 3: Test for vacuum leaks specific to bank 2 intake runners
4
Step 4: Compare bank 1 and bank 2 fuel trim values during deceleration
5
Step 5: Evaluate O2 sensor response time using propane enrichment test
Estimated Repair Cost
$100 - $400
Parts + labor, varies by vehicle and location
The upstream oxygen sensor on bank 2 is reading outside expected parameters during fuel deceleration cut-off events. This is the same condition as P2297 but affects the opposite cylinder bank in V-configuration engines.
The most common cause of P2298 (O2 Sensor Out of Range During Deceleration Bank 2 Sensor 1) is: Degraded or contaminated oxygen sensor with slow response time
Typical repair costs for P2298 range from $100 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving. May result in increased emissions and minor fuel economy impact but presents no safety concerns.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2298 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions
Difficulty
Type
Generic (SAE)
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