SAAB WIS ONLINE

ME9 / P2297 00

Symptom: Malfunction Indicator Lamp

  P2297 00


O2S 1 Performance Fault During Decel Fuel Cut-Off

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running.
Battery voltage should be between 10.7 and 16 Volts.
Oxygen sensor within normal operating temperature.
Requested lambda less than 1.6.
Internal O2S1 signal is less than 4.8 V.
Fuel cut-off (engine brake) occurred 10 times.

Fault criteria:

The correction factor for pump flow is less than 0.75 or greater than 1.3.

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Worn-out sensor. Engine management system can no longer compensate for sensor operation.

Functions in the diagnostic tool related to the fault:

Test value:
Requested O2S1 Lambda
O2S1 lambda
O2S1 Pump Current
Preheating O2S 1
Short Term Fuel Trim Status
Closed Loop
Total Fuel Trim

(See also description of readings/activations in diagnostic tool)