P0141

Test 1:

Test 2 - 5:

Test 6:

SYMPTOM
P0141-02 SENSOR 1/2 HEATER PERFORMANCE

TEST NOTE
This symptom is diagnosed using the P0135-O2 SENSOR 1/1 HEATER PERFORMANCE.

WHEN MONITORED
Engine Running and Heater duty cycle greater than 0%.

SET CONDITION
O2 Heater Temperature does not reach 400 °C (752 °F) within 90 second during monitoring conditions. Two Trip Fault.

POSSIBLE CAUSES
- O2 Sensor Heater Operation
- O2 Heater Element
- O2 Heater Ground Circuit Open
- O2 Heater Control Circuit Open
- PCM