April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detecting Condition and Trouble Area

DIAGNOSTIC INFORMATION AND PROCEDURES REFERENCE CHART

DTC detecting condition	Trouble area
P2096: Post Catalyst Fuel Trim System Too Lean Average of short term fuel trim based on HO2S is lower than -2.2% for 5 sec. (2 D/C detection logic)	Vacuum leakage Exhaust gas leakage Fuel injector malfunction HO2S and/or its circuit A/F sensor and/or its circuit Engine compression Valve clearance Intake and exhaust valve Timing chain Timing chain tensioner ECM
P2097: Post Catalyst Fuel Trim System Too Rich Average of short term fuel trim based on HO2S is higher than 2.2% for 5 sec. (2 D/C detection logic)

DTC Confirmation Procedure

WARNING: If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

Select a level road with no traffic to minimize the risk of accident.
Perform the test extremely carefully.
Perform the road test using 2 persons, a driver and an assistant.

NOTE:

If DTC other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.
Check that the following conditions are satisfied when using this procedure.
- ECT > 65°C (149°F)

Warm up engine to normal operating temperature.
Drive vehicle at 60 km/h (38 mile/h) or higher for 4 min.