Secondary Air Injection System Control Circuit High
The P2260 code indicates that the powertrain control module (PCM) has detected a high voltage condition in the control circuit for the secondary air injection (SAI) system. This system pumps fresh air into the exhaust during cold starts to reduce emissions. A high circuit voltage typically points to a short to power, a faulty relay, or a malfunctioning SAI pump. The issue can prevent the system from operating correctly, leading to increased emissions and potential drivability concerns.
1. Most Common Causes
- Faulty secondary air injection pump relay
- Short to power in the SAI pump control circuit
- Defective secondary air injection pump
- Corroded or damaged wiring/connectors
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Failed emissions test
- Possible rough idle or hesitation on cold start
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P2260 and check for related codes.
Step 2: Visually inspect the SAI pump relay, fuse, and wiring for damage or corrosion.
Step 3: Test the SAI pump relay and control circuit voltage with a multimeter.
Step 4: If relay and wiring are okay, test the SAI pump operation and resistance.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
Yes, it is generally safe to drive, but the vehicle may fail an emissions test and the Check Engine Light will stay on. It's best to diagnose and repair soon to avoid potential drivability issues.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts like a relay or pump, plus labor if you have a mechanic do the work. DIY repair can be cheaper.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.