P2484 — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5

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

  1. Read the code and freeze frame Connect an OBD2 scanner, confirm P2484 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. 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.
  3. Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the exhaust gas temperature sensor circuit intermittent/erratic bank 1 sensor 5 for damage, corrosion, chafing or poor contact.
  4. Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
  5. Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
  6. Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2484 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2484 (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 P2484 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 P2484?

The most common causes are: poor ground connection, blown fuse feeding the circuit, faulty sensor or actuator of the affected circuit.

What does OBD2 code P2484 mean?

Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5 (P2484): a powertrain (engine/transmission) fault affecting the sensor and actuator circuits. The car is usually drivable while you plan the repair. Most often caused by poor ground connection, blown fuse feeding the circuit, faulty sensor or actuator of the affected circuit.

How much does it cost to fix P2484?

Replace the faulty sensor or actuator — $150–$500; Repair wiring or connectors — $80–$250; Control module repair — $300–$1,000. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

What are the symptoms of P2484?

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

Is it safe to drive with P2484?

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 P2484 mean?

P2484 (Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5) is stored when self-diagnostics detect abnormal readings or behaviour of the sensor and actuator circuits. It belongs to the powertrain (engine/transmission) category.

In this definition, “Bank 1” is the side of the engine that contains 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 P2484 — engine load, rpm, temperature, speed — tells you exactly when the problem occurs, so reproduce those conditions when testing.

What causes P2484?

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

Common symptoms of P2484

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

How to diagnose P2484

  1. Connect an OBD2 scanner, confirm P2484 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
  2. 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.
  3. Visually inspect the wiring harness and connectors related to the exhaust gas temperature sensor circuit intermittent/erratic bank 1 sensor 5 for damage, corrosion, chafing or poor contact.
  4. Measure reference voltage, ground and signal continuity at the component connector.
  5. Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
  6. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2484 does not return.

How to fix P2484

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 P2484?

Repair cost depends on which component actually failed. Typical scenarios for P2484 (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 P2484 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 P2484?

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.

Related OBD2 codes