P2471 — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4

OBD2 code P2471 flags a problem with the sensor and actuator circuits (exhaust gas temperature sensor circuit high bank 1 sensor 4). The car is usually drivable while you plan the repair. Common culprits: blown fuse feeding the circuit, poor ground connection, 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 P2471 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 high bank 1 sensor 4 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 P2471 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2471 (parts and labor, USD, independent shop rates): Replace the faulty sensor or actuator: $150–$500; Repair wiring or connectors: $80–$250; Control module repair: $300–$1,000. Overall, fixing P2471 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

Is it safe to drive with P2471?

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 is the most common cause of P2471?

The most common causes are: blown fuse feeding the circuit, poor ground connection, control module driver fault.

How do I diagnose P2471 myself?

Start with a scan: confirm P2471, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the sensor and actuator circuits, and verify the suspect component against live data before buying parts.

Will P2471 clear itself?

Sometimes P2471 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 are the symptoms of P2471?

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

What does P2471 mean?

P2471 is logged by the onboard diagnostics when the sensor and actuator circuits does not behave as expected. The official definition is “Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 4”. This is a powertrain (engine/transmission) category code.

In this definition, “Bank 1” is the side of the engine that contains cylinder 1 and “Sensor 4” 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.

The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores P2471 and switches on the warning light. Freeze frame data saved with the code shows the exact conditions — rpm, load, temperature, speed — at the moment the fault was detected, which is the best starting point for diagnosis.

Common symptoms of P2471

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

What causes P2471?

poor ground connection
corroded, loose or damaged connector
faulty sensor or actuator of the affected circuit
blown fuse feeding the circuit

How to diagnose P2471

Connect an OBD2 scanner, confirm P2471 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 high bank 1 sensor 4 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 P2471 does not return.

How to fix P2471

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

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

How much does it cost to fix P2471?

Repair cost depends on which component actually failed. Typical scenarios for P2471 (parts and labor, USD, independent shop rates):

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

Overall, fixing P2471 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 P2471?