DTC Advanced Diagnostics: P2195 (1.5L Engine)
DTC P2195: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Signal Stuck Lean
General Description
When the air/fuel ratio (A/F) sensor (sensor 1) is properly connected to the engine wire harness, but it is not installed in the exhaust pipe, the feedback is not done properly even if the A/F sensor (sensor 1) is active after starting the engine. Thus, the exhaust emissions increase. When the A/F sensor (sensor 1) output stays out of the normal range after the A/F sensor (sensor 1) becomes active, the powertrain control module (PCM) detects that the A/F sensor (sensor 1) is not properly installed and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Once per driving cycle |
| Sequence | None |
| Duration | 7.0 seconds or more |
| DTC Type | Two drive cycles, MIL on |
Enable Conditions
| Condition | |
|---|---|
| Fuel feedback | Other than during fuel cut-off operation |
Malfunction Threshold
The A/F sensor (sensor 1) output voltage is 3.28 V or more for at least 7.0 seconds.
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- A/F sensor (sensor 1) heater failure
- A/F sensor (sensor 1) element failure
- Out of fuel
Confirmation Procedure
Operating Condition
Start the engine, and let it idle for at least 2 minutes.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on and a Confirmed DTC, the freeze data, and the on-board snapshot are stored.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.