Post Catalyst Fuel Trim System Too Rich Bank 1
Table of contents
P2097 SUBARU Possible Causes
- Exhaust leak near rear O2 sensor
- Fuel contamination
- Faulty Downstream (Rear) Heated Oxygen Sensor (HO2S)
- Downstream Heated Oxygen Sensor harness is open or shorted
- Downstream Heated Oxygen Sensor circuit poor electrical connection
How do I fix code P2097 SUBARU?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P2097 SUBARU code
The cost of diagnosing the P2097 SUBARU code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2097 SUBARU Description
The Powertrain Control Module (PCM) monitors the correction value from the Downstream Heated Oxygen Sensor (HO2S) as part of the fore-aft oxygen sensor control routine. This Diagnostic Trouble Code (DTC) sets when the correction value is greater than a calibrated limit.
