Exhaust Temp Too Low for DPF Regeneration Bank 2
The P244E code indicates that the exhaust gas temperature sensor on Bank 2 is reading too low for the Diesel Particulate Filter (DPF) regeneration process to occur. This prevents the DPF from burning off accumulated soot, leading to potential clogging and reduced engine performance. Common causes include a faulty exhaust temperature sensor, wiring issues, or a malfunctioning DPF regeneration system.
1. Most Common Causes
- Faulty exhaust gas temperature sensor Bank 2
- Wiring or connector issues in the sensor circuit
- Exhaust leaks affecting temperature readings
- Malfunctioning DPF regeneration system
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Decreased engine performance
- Possible DPF clogging and regeneration issues
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect the exhaust temperature sensor Bank 2 wiring and connector for damage or corrosion.
Step 3: Test the sensor resistance and compare to manufacturer specifications.
Step 4: Check for exhaust leaks near the sensor.
Step 5: Perform a DPF regeneration test to verify system operation.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the DPF may become clogged, leading to costly repairs. Short trips may be possible but should be minimized.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for sensor replacement, but can be higher if wiring repairs or DPF cleaning is needed.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.