P2443 on TOYOTA TACOMA
AIR System Switching Valve Stuck Closed Bank 2
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Toyota Tacoma context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P2443.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P2443 Means on Your TOYOTA TACOMA
P2443 is a diagnostic trouble code indicating: AIR System Switching Valve Stuck Closed Bank 2. This code relates to the fuel, air, emissions, or auxiliary powertrain control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real TOYOTA TACOMA Owner Reports
Source: NHTSA Complaints Database
"The check engine light and the trac off light came on as i was merging onto the interstate. i immediately stopped the vehicle, pulled over, and took my 2012 toyota tacoma with 78,000 miles to the mechanic where i left it overnight for them to look at it in the morning."
"Code p2443 valve stuck closed came up when my "trac and cel" lights came up on the dash. this happened on startup. this code is a failure of the secondary air injection switching valve stuck closed."
"I have had my secondary air pump replaced twice already. Now six months later am having the same codes and the truck is back at the dealership. Throws code p2443 valve stuck closed.....on a 6 month old part. This w=has been an issue with this and other toyota models since 2012."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on TOYOTA TACOMA
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.