What Does P2485 Mean?
The PCM has detected an open circuit or complete loss of signal from the exhaust gas temperature sensor located at Bank 2, Sensor 5 position. This sensor monitors exhaust temperature for emission control and DPF regeneration strategies.
Common Causes
35%
Broken or disconnected wiring harness to EGT sensor
30%
Failed exhaust gas temperature sensor
20%
Corroded or damaged sensor connector terminals
10%
PCM internal fault or software issue
5%
Damaged sensor due to physical impact or exhaust leak
Diagnostic Steps
1
Step 1: Visually inspect EGT sensor and wiring for physical damage, disconnection, or corrosion at Bank 2 Sensor 5 location
2
Step 2: Check connector terminals for corrosion, bent pins, or moisture intrusion and clean/repair as needed
3
Step 3: Measure resistance of EGT sensor according to manufacturer specifications (typically 50-200 ohms at room temperature)
4
Step 4: Check continuity and resistance of wiring harness between sensor and PCM, verify no opens or shorts to ground/power
5
Step 5: If all wiring and sensor test good, perform PCM voltage supply test and consider PCM fault or software update
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The PCM has detected an open circuit or complete loss of signal from the exhaust gas temperature sensor located at Bank 2, Sensor 5 position. This sensor monitors exhaust temperature for emission control and DPF regeneration strategies.
The most common cause of P2485 (Exhaust Gas Temperature Sensor Circuit/Open Bank 2 Sensor 5) is: Broken or disconnected wiring harness to EGT sensor
Typical repair costs for P2485 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive but may experience reduced fuel economy and failed emissions testing. DPF regeneration cycles may be affected on diesel engines.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2485 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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