What Does P2480 Mean?
The PCM has detected an open circuit or complete loss of signal from exhaust gas temperature sensor 5 on bank 1. This indicates no communication between the sensor and control module. Sensor 5 is typically located furthest downstream in modern diesel exhaust systems.
Common Causes
35%
Broken or disconnected wiring to EGT sensor 5
30%
Failed EGT sensor with internal open circuit
20%
Corroded or damaged connector terminals preventing electrical contact
10%
Damaged sensor mounting causing internal sensor failure
5%
PCM internal circuit failure for sensor input
Diagnostic Steps
1
Step 1: Inspect sensor connector for corrosion, bent pins, or moisture intrusion and clean/repair as needed
2
Step 2: Check wiring harness from sensor to PCM for cuts, abrasion, or melted insulation from exhaust heat
3
Step 3: Measure sensor resistance (should be 200-500 ohms typically); infinite resistance indicates open sensor
4
Step 4: Check continuity from sensor connector through to PCM connector on both signal and ground circuits
5
Step 5: If wiring is intact, replace sensor and verify proper installation torque and sealing
Estimated Repair Cost
$180 - $650
Parts + labor, varies by vehicle and location
The PCM has detected an open circuit or complete loss of signal from exhaust gas temperature sensor 5 on bank 1. This indicates no communication between the sensor and control module. Sensor 5 is typically located furthest downstream in modern diesel exhaust systems.
The most common cause of P2480 (Exhaust Gas Temperature Sensor Circuit/Open Bank 1 Sensor 5) is: Broken or disconnected wiring to EGT sensor 5
Typical repair costs for P2480 range from $180 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally safe to drive, but emissions system may not function optimally. DPF regeneration may be affected, potentially causing damage if ignored long-term.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2480 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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