P2480: Exhaust Gas Temperature Sensor Circuit/Open Bank 1 Sensor 5
The P2480 code indicates an open circuit in the exhaust gas temperature (EGT) sensor circuit for Bank 1 Sensor 5. This sensor monitors exhaust temperature to protect the diesel particulate filter (DPF) and turbocharger from overheating. An open circuit means the sensor is not providing a signal to the ECU, often due to a broken wire, damaged connector, or internal sensor failure. This can lead to incorrect temperature readings, potentially causing regeneration issues or limp mode.
01. Most Common Causes
- Open circuit in EGT sensor wiring or connector
- Faulty EGT sensor (internal open)
- Corrosion or damage to sensor harness
- Blown fuse related to EGT sensor circuit
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or limp mode
- DPF regeneration issues
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P2480 is present.
Step 2: Visually inspect EGT sensor Bank 1 Sensor 5 wiring and connector for damage, corrosion, or loose connections.
Step 3: Use a multimeter to check resistance across sensor terminals; compare to manufacturer specs (typically 100-200k ohms at room temp).
Step 4: Check for continuity in the sensor circuit from ECU to sensor connector.
Step 5: If wiring is intact, replace the EGT sensor.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances. The ECU may limit engine power to prevent damage, and DPF regeneration may be disabled, leading to clogging.
How much does it cost to fix?▼
Typically $50-$150 for the sensor part; labor can add $50-$100 if done by a shop.