What Does P2482 Mean?
The PCM has detected that the signal voltage from EGT sensor 5 on bank 1 exceeds the maximum acceptable threshold. This can indicate a short to voltage in the circuit or a sensor reporting implausibly high temperatures. The circuit voltage is typically above 4.8-5.0V when this code sets.
Common Causes
35%
Short to voltage in sensor signal wire
30%
Failed EGT sensor with internal component failure
20%
Corroded connector causing high resistance and voltage feedback
10%
Poor ground connection causing reference voltage issues
5%
PCM internal circuit failure causing incorrect voltage supply
Diagnostic Steps
1
Step 1: Check live data for sensor voltage reading; should be near 5V if shorted to power
2
Step 2: Disconnect sensor and measure voltage at harness connector; should drop to reference voltage if sensor is faulty
3
Step 3: Inspect wiring for contact with battery voltage sources or other powered circuits
4
Step 4: Test sensor resistance and compare to specifications; abnormal high resistance indicates sensor failure
5
Step 5: Verify ground circuit integrity with voltage drop test (should be less than 0.1V)
Estimated Repair Cost
$170 - $620
Parts + labor, varies by vehicle and location
The PCM has detected that the signal voltage from EGT sensor 5 on bank 1 exceeds the maximum acceptable threshold. This can indicate a short to voltage in the circuit or a sensor reporting implausibly high temperatures. The circuit voltage is typically above 4.8-5.0V when this code sets.
The most common cause of P2482 (Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5) is: Short to voltage in sensor signal wire
Typical repair costs for P2482 range from $170 to $620, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally safe for short-term driving, but emissions controls may be compromised. May cause improper DPF regeneration leading to filter damage if not addressed.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2482 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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