P2485 — Exhaust Gas Temperature Sensor Circuit/Open Bank 2 Sensor 5

OBD2 code P2485 flags a problem with the sensor and actuator circuits (exhaust gas temperature sensor circuit/open bank 2 sensor 5). The car is usually drivable while you plan the repair. Common culprits: blown fuse feeding the circuit, open or shorted wiring in the circuit, control module driver fault.

powertrain (engine/transmission)

Is it safe to drive?

Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P2485 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the exhaust gas temperature sensor circuit/open bank 2 sensor 5 for damage, corrosion, chafing or poor contact.
Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2485 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2485 (parts and labor, USD, independent shop rates): Replace the faulty sensor or actuator: $150–$500; Control module repair: $300–$1,000; Repair wiring or connectors: $80–$250. Overall, fixing P2485 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

What is the most common cause of P2485?

The most common causes are: blown fuse feeding the circuit, open or shorted wiring in the circuit, control module driver fault.

Is it safe to drive with P2485?

In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.

What does OBD2 code P2485 mean?

What are the symptoms of P2485?

Drivers most often notice: increased fuel consumption in some cases, possible limp mode depending on the affected component, the affected system operates intermittently or not at all, Check Engine Light on.

Will P2485 clear itself?

Sometimes P2485 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What does P2485 mean?

Behind P2485 is a specific failure in the sensor and actuator circuits: exhaust gas temperature sensor circuit/open bank 2 sensor 5. The onboard computer stores it in the powertrain (engine/transmission) group after verifying the fault over repeated checks.

In this definition, “Bank 2” is the side of the engine opposite to cylinder 1 and “Sensor 5” is the downstream (after the catalytic converter) sensor. Mixing up banks and sensor positions is the most common DIY mistake with this code — verify the physical location before replacing anything.

This code does not appear from a single bad reading: the module must see the fault condition repeat under defined operating conditions before it turns on the warning light. The freeze frame captured with P2485 — engine load, rpm, temperature, speed — tells you exactly when the problem occurs, so reproduce those conditions when testing.

What causes P2485?

faulty sensor or actuator of the affected circuit
open or shorted wiring in the circuit
corroded, loose or damaged connector
blown fuse feeding the circuit
poor ground connection
control module driver fault

Common symptoms of P2485

increased fuel consumption in some cases
possible limp mode depending on the affected component
the affected system operates intermittently or not at all
Check Engine Light on

How to diagnose P2485

Connect an OBD2 scanner, confirm P2485 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Visually inspect the wiring harness and connectors related to the exhaust gas temperature sensor circuit/open bank 2 sensor 5 for damage, corrosion, chafing or poor contact.
Measure reference voltage, ground and signal continuity at the component connector.
Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2485 does not return.

How to fix P2485

Start with the cheapest and most common causes before replacing expensive parts:

Replace the faulty sensor or actuator — $150–$500
Control module repair — $300–$1,000
Repair wiring or connectors — $80–$250

How much does it cost to fix P2485?

Repair cost depends on which component actually failed. Typical scenarios for P2485 (parts and labor, USD, independent shop rates):

Replace the faulty sensor or actuator: $150–$500
Control module repair: $300–$1,000
Repair wiring or connectors: $80–$250

Overall, fixing P2485 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P2485?