P2239 is set when λ sensor signal circuit is short to battery for more than 2.0 sec. This DTC is due to λ sensor signal circuit short to battery or faulty component.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Signal monitoring | 1. Short to battery in Lambda Sensor Unit signal circuit 2. Faulty Lambda Sensor Unit | |
Enable Conditions |
•
Engine running
•
Lambda sensor unit heating | ||
Threshold Value |
•
Short to battery in Lambda Sensor Unit signal circuit | ||
Fail Safe | Fuel Cut |
•
NO | |
EGR Off |
•
NO | ||
Fuel Limit |
•
NO | ||
Check Lamp |
•
NO | ||
