P2442 on TOYOTA TACOMA
AIR System Switching Valve Stuck Open 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 P2442.
- 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 P2442 Means on Your TOYOTA TACOMA
P2442 is a diagnostic trouble code indicating: AIR System Switching Valve Stuck Open 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
"My 2012 tacoma warning light 1) engine and 2 trac off warning light came on and lost power going 65 mph on freeway and would not go over 25 mph (dangerous!). obd-ii scanner displayed error code check p2442 indicating faulty air injection pumps and/or air switching valves."
"On my 2012 tacoma the code p2440 and p2442 which represent a stuck open valve in the secondary air injection system. upon my research into this issue on forums i have learned this is a common problem with the toyota systems particularly the 2012 tacoma."
"Failure of the secondary air injection system p2440 and p2442, while the vehicle was moving onto a city street from a parking lot. when accelerating immediately there was a decrease in power and the check engine light along with the "trac off" light illuminating simultaneously."
"About 2 weeks ago my truck was hesitating and my check engine/off trac light was on. the car would not go above 40mph on city streets or highway. i went to a toyota dealer in puerto rico, they said the codes were p0052, p0456, p2140, p2442 secondary air injection system is bad and would cost $2,458."
"While on a road trip i had my check engine light come on while on the highway due to defective secondary injection valves being stuck closed/open. the codes i had for this issue is p2440 and p2442."
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.