DTC P2097:00: Notes

DTC P2097:00 (LF, L5) DETECTION CONDITION AND POSSIBLE CAUSE

DTC P2097:00	Target A/F feedback system too rich
DETECTION CONDITION	The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is less than specification, the PCM determines that the target A/F feedback system is too rich. Diagnostic support note This is a continuous monitor (fuel system). The MIL illuminates if the PCM detects the above malfunctioning condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction conditions during first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	HO2S malfunction Looseness HO2S HO2S malfunction IAT sensor malfunction Erratic signal to PCM ECT sensor No. 1 signal malfunction MAF sensor signal malfunction TP sensor signal malfunction VSS signal malfunction A/F sensor malfunction Looseness A/F sensor A/F sensor malfunction Fuel supply system malfunction or improper fuel line pressure Pressure regulator malfunction Fuel pump unit malfunction Fuel leakage on fuel line from fuel delivery pipe and fuel pump Fuel filter clogged or restricted Fuel return hose clogged Purge solenoid valve malfunction Ignition system malfunction Ignition coil related wiring harness malfunction Fuel injector malfunction Insufficient engine compression ECT sensor No. 1 malfunction PCM malfunction

DTC P2097:00

Target A/F feedback system too rich

DETECTION CONDITION

The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is less than specification, the PCM determines that the target A/F feedback system is too rich.

Diagnostic support note

This is a continuous monitor (fuel system).
The MIL illuminates if the PCM detects the above malfunctioning condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
PENDING CODE is available if the PCM detects the above malfunction conditions during first drive cycle.
FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

HO2S malfunction
- Looseness HO2S
- HO2S malfunction
IAT sensor malfunction
Erratic signal to PCM
- ECT sensor No. 1 signal malfunction
- MAF sensor signal malfunction
- TP sensor signal malfunction
- VSS signal malfunction
A/F sensor malfunction
- Looseness A/F sensor
- A/F sensor malfunction
Fuel supply system malfunction or improper fuel line pressure
- Pressure regulator malfunction
- Fuel pump unit malfunction
- Fuel leakage on fuel line from fuel delivery pipe and fuel pump
- Fuel filter clogged or restricted
- Fuel return hose clogged
Purge solenoid valve malfunction
Ignition system malfunction
- Ignition coil related wiring harness malfunction
Fuel injector malfunction
Insufficient engine compression
ECT sensor No. 1 malfunction
PCM malfunction