P2445 — Secondary Air Injection System Pump Stuck Off Bank 1

OBD2 code P2445 flags a problem with the sensor and actuator circuits (secondary air injection system pump stuck off bank 1). The car is usually drivable while you plan the repair. Common culprits: poor ground connection, control module driver fault, blown fuse feeding the circuit.

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 P2445 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 secondary air injection system pump stuck off bank 1 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 P2445 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2445 (parts and labor, USD, independent shop rates): Control module repair: $300–$1,000; Repair wiring or connectors: $80–$250; Replace the faulty sensor or actuator: $150–$500. Overall, fixing P2445 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

How much does it cost to fix P2445?

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

How do I diagnose P2445 myself?

Start with a scan: confirm P2445, 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.

What are the symptoms of P2445?

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

Will P2445 clear itself?

Sometimes P2445 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 is the most common cause of P2445?

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

What does P2445 mean?

The engine control module sets P2445 when it detects a fault in the sensor and actuator circuits. In practical terms: secondary air injection system pump stuck off bank 1. The code belongs to the powertrain (engine/transmission) group of OBD2 codes.

“Bank 1” means the side of the engine that contains cylinder 1. Verify which side that is on your specific engine before testing or replacing parts.

The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores P2445 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.

What causes P2445?

  • corroded, loose or damaged connector
  • poor ground connection
  • control module driver fault
  • blown fuse feeding the circuit

Common symptoms of P2445

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

How to diagnose P2445

  1. Connect an OBD2 scanner, confirm P2445 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 secondary air injection system pump stuck off bank 1 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 P2445 does not return.

How to fix P2445

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

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

How much does it cost to fix P2445?

Repair cost depends on which component actually failed. Typical scenarios for P2445 (parts and labor, USD, independent shop rates):

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

Overall, fixing P2445 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 P2445?

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.

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