P2085 moderate

Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)

The P2085 code means the vehicle's onboard diagnostic system has detected: Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2). This is a moderate severity code.

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Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $100 - $400 (parts and labor)

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Common Symptoms

Check Engine Light on
EGT reads extremely high
Engine may reduce power as protection
DPF warning light may illuminate
Possible false overtemperature condition

Probable Causes (Ranked by Likelihood)

Open circuit in EGT sensor 2 wiring Very High
Corroded connector from heat exposure High
Failed sensor with open element Moderate
Short to voltage in circuit Low

Step-by-Step Diagnostic Procedure

Check connector for heat damage and corrosion
Measure sensor resistance
Inspect wiring for open circuits near exhaust
Replace sensor if resistance is infinite or out of range

Frequently Asked Questions

What does P2085 indicate?

P2085 indicates: Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2). The ECM detected an issue requiring diagnosis.

Is P2085 urgent?

Moderate priority. Schedule a repair.

What should I check first?

Start with a visual inspection of the sensor wiring and connector. Then use a scan tool to read live data and compare to expected values. A multimeter can verify sensor resistance and circuit integrity.