Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5
The P2482 code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the exhaust gas temperature (EGT) sensor located in Bank 1, Sensor 5 (typically downstream of the diesel particulate filter or selective catalytic reduction system). This sensor monitors exhaust temperature to protect components and optimize emissions. A high circuit condition means the voltage reading is above the expected range, often due to an open circuit, short to power, or a faulty sensor. This can lead to incorrect temperature readings, potentially causing regeneration issues or emissions system damage.
01. Most Common Causes
- Faulty exhaust gas temperature sensor
- Open or shorted wiring in the sensor circuit
- Corroded or damaged connector
- ECM software or hardware issue (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel efficiency
- Possible limp mode or reduced engine power
- Failed emissions test
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm code P2482 and check for related codes.
Step 2: Visually inspect the EGT sensor and wiring for damage, corrosion, or loose connections.
Step 3: Measure sensor resistance and compare to manufacturer specifications; replace if out of range.
Step 4: Check for short to power or ground in the sensor circuit using a multimeter.
Step 5: If wiring and sensor are okay, test the ECM output or reprogram as needed.
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 it can cause improper regeneration of the DPF or damage to the exhaust system. Short trips may be okay, but have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $150 to $350, including parts (sensor $50-$150) and labor (1-2 hours at $100-$150 per hour).