DTC P2097:00: Notes

DTC P2097:00 (L3 WITH TC) DETECTION CONDITION & POSSIBLE CAUSES

DTC P2097:00	Target A/F feedback system too rich
DETECTION CONDITION	The PCM monitors the target A/F fuel trim while under the target A/F feedback control. If the fuel trim is less than the 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 malfunction 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 condition during first drive cycle. FREEZE FRAME DATA (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Exhaust gas leakage 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 Related connector or terminals malfunction Related wiring harness malfunction Exhaust gas leakage A/F sensor malfunction High-pressure side fuel delivery system malfunction Fuel pressure sensor (built-in fuel delivery pipe) malfunction Relief valve (built-in fuel delivery pipe) malfunction Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction High pressure fuel pump malfunction Low-pressure side fuel delivery system malfunction Low pressure side fuel line restriction (between fuel pump unit and high pressure fuel pump) Fuel filter clogging Fuel pump unit malfunction Fuel pressure regulator (built-in fuel pump unit) malfunction Purge solenoid valve malfunction Insufficient engine compression Improper operation of fuel injector 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 while under the target A/F feedback control. If the fuel trim is less than the 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 malfunction 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 condition during first drive cycle.
FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Exhaust gas leakage
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
- Related connector or terminals malfunction
- Related wiring harness malfunction
Exhaust gas leakage
A/F sensor malfunction
High-pressure side fuel delivery system malfunction
- Fuel pressure sensor (built-in fuel delivery pipe) malfunction
- Relief valve (built-in fuel delivery pipe) malfunction
- Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
- High pressure fuel pump malfunction
Low-pressure side fuel delivery system malfunction
- Low pressure side fuel line restriction (between fuel pump unit and high pressure fuel pump)
- Fuel filter clogging
- Fuel pump unit malfunction
- Fuel pressure regulator (built-in fuel pump unit) malfunction
Purge solenoid valve malfunction
Insufficient engine compression
Improper operation of fuel injector
ECT sensor No. 1 malfunction
PCM malfunction