Check Engine Code
P2097
Post-Catalyst Fuel Trim System Too Rich (Bank 1)
Severity: medium
DIY difficulty: 2/5
Typical cost: $40–$1500
What P2097 means
Counterpart to P2096. Downstream O2 reading rich consistently — often a degraded catalyst.
Symptoms
- CEL
- Often paired with P0420
Likely causes (most common first)
- Failing catalyst
- Coolant contamination
- Worn downstream O2 sensor
Can I keep driving?
Medium — drivable but fix soon
Typical repair cost
DIY fixes can start near $40 (parts only). Shop repairs for P2097 typically run up to $1500 depending on the underlying cause and vehicle. Start with the most common cause — Failing catalyst — before throwing parts at it.
Related codes
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