P2260 — Secondary Air Injection System Control "B" Circuit High

What does OBD2 code P2260 mean?

OBD2 code P2260 flags a problem with the sensor and actuator circuits (secondary air injection system control "B" circuit high). The car is usually drivable while you plan the repair. Common culprits: faulty sensor or actuator of the affected circuit, control module driver fault, blown fuse feeding the circuit.

Is it safe to drive with P2260?

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.

Will P2260 clear itself?

Sometimes P2260 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.

How much does it cost to fix P2260?

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 P2260 myself?

Start with a scan: confirm P2260, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the secondary air injection system control "B", and verify the suspect component against live data before buying parts.

What does P2260 mean?

Seeing P2260 on your scanner? The control unit has caught the sensor and actuator circuits operating outside its calibrated window. The formal description is “Secondary Air Injection System Control "B" Circuit High”, and the code is grouped under powertrain (engine/transmission) faults.

“Circuit high” means the control module sees a voltage on the secondary air injection system control "B" circuit that is above the expected range — typically close to battery voltage. Physically this points to a short to a power feed, a broken ground return, or a failed component pulling the signal line high.

To set P2260, the control module compares live readings of the sensor and actuator circuits against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.

Common symptoms of P2260

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

What causes P2260?

• failed secondary air injection system control "B" pulling the signal high
• open ground return of the secondary air injection system control "B"
• signal wire shorted to battery positive
• open or shorted wiring in the circuit
• corroded, loose or damaged connector
• faulty sensor or actuator of the affected circuit
• blown fuse feeding the circuit
• poor ground connection

How to diagnose P2260

1. Connect an OBD2 scanner, confirm P2260 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 control "B" for damage, corrosion, chafing or poor contact.
4. With the secondary air injection system control "B" disconnected, measure signal voltage at the harness connector: a high reading with the component unplugged indicates a short to power in the harness; if it drops to normal, the component itself is faulty.
5. Measure reference voltage, ground and signal continuity at the component connector.
6. Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
7. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2260 does not return.

How to fix P2260

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 P2260?

Repair cost depends on which component actually failed. Typical scenarios for P2260 (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 P2260 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 P2260?

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

• P2200: NOx Sensor Circuit Bank 1
• P2201: NOx Sensor Circuit Range/Performance Bank 1
• P2202: NOx Sensor Circuit Low Bank 1
• P2203: NOx Sensor Circuit High Bank 1
• P2204: NOx Sensor Circuit Intermittent Bank 1
• P2205: NOx Sensor Heater Control Circuit/Open Bank 1