Exhaust Temperature Too Low for DPF Regeneration Bank 2
The P244E code indicates that the exhaust gas temperature (EGT) sensor on Bank 2 is reading too low for the diesel particulate filter (DPF) regeneration process to occur. This can prevent the DPF from burning off accumulated soot, leading to clogging and reduced engine performance. Common causes include a faulty EGT sensor, wiring issues, exhaust leaks, or problems with the regeneration system itself.
01. Most Common Causes
- Faulty exhaust gas temperature sensor Bank 2
- Wiring or connector issues in the EGT sensor circuit
- Exhaust leaks before or at the DPF
- Insufficient exhaust temperature due to engine issues or driving conditions
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Decreased engine performance
- DPF warning light may appear
- Possible limp mode activation
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P244E is present; check for related codes.
Step 2: Inspect EGT sensor Bank 2 wiring and connector for damage or corrosion.
Step 3: Test EGT sensor resistance and compare to manufacturer specifications.
Step 4: Check for exhaust leaks using a smoke machine or visual inspection.
Step 5: Monitor EGT sensor data with a scan tool during a test drive to confirm low readings.
04. Commonly Affected Makes
05. 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 okay, but the issue should be addressed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnostic and sensor replacement, but can be higher if wiring repairs or exhaust work is needed.