DTC P2096:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSES

DTC P2096:00	Target A/F feedback system too lean
DETECTION CONDITION	The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is more than the specification, the PCM determines that the target A/F feedback system is too lean 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 condition during first drive cycle. FREEZE FRAME DATA is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	HO2S malfunction Leakage exhaust gas IAT sensor malfunction Erratic signal to PCM ECT sensor signal malfunction MAF sensor signal malfunction TP sensor signal malfunction VSS signal malfunction A/F sensor malfunction Leakage exhaust gas MAF sensor malfunction Air suction in intake air system Insufficient fuel line pressure Leakage fuel Fuel pump unit malfunction Ignition system malfunction Ignition coil related wiring harness malfunction Fuel injector malfunction Insufficient engine compression PCM malfunction

DTC P2096:00

Target A/F feedback system too lean

DETECTION CONDITION

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

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 condition during first drive cycle.
FREEZE FRAME DATA is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

HO2S malfunction
- Leakage exhaust gas
IAT sensor malfunction
Erratic signal to PCM
- ECT sensor signal malfunction
- MAF sensor signal malfunction
- TP sensor signal malfunction
- VSS signal malfunction
A/F sensor malfunction
- Leakage exhaust gas
MAF sensor malfunction
Air suction in intake air system
Insufficient fuel line pressure
Leakage fuel
Fuel pump unit malfunction
Ignition system malfunction
- Ignition coil related wiring harness malfunction
Fuel injector malfunction
Insufficient engine compression
PCM malfunction