Chrysler PT Cruiser 2001 Service Manual Supplement page 2611

Symptom:
P1195-1/1 O2 SENSOR SLOW DURING CATALYST MONITOR
When Monitored and Set Condition:
P1195-1/1 O2 SENSOR SLOW DURING CATALYST MONITOR
When Monitored: With the engine running, coolant greater than 76°C (170°F), open
throttle, steady to slightly increasing vehicle speed greater than 28 KMH (18 MPH) but
less than 88 KMH (55 MPH), with a light load on the engine, for a period no less than 5
minutes.
Set Condition: The oxygen sensor signal voltage is switching from below 0.39 volt to
above 0.6 volts and back fewer times than required.
EXCESSIVE ENGINE BLOWBY
EXHAUST LEAK
O2S SENSOR GROUND CIRCUIT VOLTAGE DROP
O2S SIGNAL CIRCUIT VOLTAGE DROP
WIRING HARNESS INTERMITTENT PROBLEM
O2 SENSOR
TEST
1 Turn the ignition on.
With the DRB, read the DTC's.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Go To 7
No
2 Start engine. Allow the engine to reach normal operating temperature.
Check the exhaust for excessive smoke from internal oil or coolant leaks.
Is there an oil or coolant consumption condition present?
Yes → Repair engine for excessive blowby (oil or coolant) as necessary.
→ Go To 3
No
3 Start the engine and allow engine to idle.
Check for any exhaust leaks between the engine and the appropriate O2S.
Check for exhaust leaks between the engine and the appropriate downstream O2
Sensor.
Are there any exhaust leaks?
Yes → Repair or replace leaking exhaust parts as necessary.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
151
DRIVEABILITY - GAS
APPLICABILITY
All
All
All