The P2260: Secondary Air Injection System Control ‘B’ Circuit High code refers to a high voltage or signal detected in the secondary air injection system control ‘B’ circuit. This can indicate a fault in the control module, wiring issues, or problems with connectors. The secondary air injection system helps reduce harmful emissions during cold starts by injecting air into the exhaust, and a high voltage condition in this circuit can impair its effectiveness.
P2260 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2260: Secondary Air Injection System Control ‘B’ Circuit High |
| Is it serious? | Yes, as an improperly functioning secondary air injection system can lead to increased emissions and non-compliance with emission standards. |
| Possible causes | – High voltage or signal in secondary air injection system control ‘B’ circuit – Faulty control module – Wiring issues – Connector problems |
| How to diagnose? | – Measure voltage in the secondary air injection system control ‘B’ circuit – Test the control module and associated components – Inspect wiring and connectors for faults |
P2260 Meaning
The P2260: Secondary Air Injection System Control ‘B’ Circuit High code signifies that the voltage in the secondary air injection system control circuit for ‘B’ is higher than it should be. High voltage in this circuit might suggest a short to power, faulty wiring, or a malfunctioning control module. Since the secondary air injection system is designed to reduce emissions during cold starts, a malfunction due to high voltage can lead to increased emissions and reduced effectiveness of the emissions control system.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check if any other related codes are present. These may help determine if the high voltage issue is specific to the secondary air injection system or part of a larger problem. | OBD-II Scanner |
| Measure Voltage in the Secondary Air Injection System Control ‘B’ Circuit | Use a multimeter to measure the voltage in the secondary air injection system control ‘B’ circuit. Compare the voltage reading to the manufacturer’s specifications. If the voltage is higher than expected, investigate for possible causes such as shorts or a faulty control module. | Multimeter, Vehicle Service Manual |
| Test the Control Module and Associated Components | Use a diagnostic tool to test the control module that regulates the secondary air injection system. Verify that the control module is functioning correctly and that its output signals are within the expected range. If the module is found to be faulty, it should be replaced or recalibrated. | Diagnostic Scanner |
| Inspect Wiring and Connectors for Faults | Inspect all wiring and connectors associated with the secondary air injection system control ‘B’ circuit. Look for loose connections, signs of corrosion, frayed or broken wires that could lead to high voltage readings, and repair or replace as needed. | Flashlight, Safety Gloves |
| Check the Air Pump and Relay | Check the secondary air pump and its associated relay. A faulty relay may be stuck closed, causing excessive voltage to be present in the system. Ensure that the relay is operating correctly and that the air pump is not contributing to the high voltage condition. | Relay Tester, Basic Hand Tools |
| Clear the Code and Test Drive | After making the necessary repairs, use an OBD-II scanner to clear the P2260 code. Take the vehicle for a test drive to ensure that the secondary air injection system is functioning correctly and that the high voltage condition has been resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | Re-scan the vehicle using the OBD-II scanner to confirm that the P2260 code has not returned. If the code persists, further diagnostics are required to identify the underlying cause. | OBD-II Scanner |
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