The Lemon IndexThe valve that lets cold-start air into the bank 2 exhaust is stuck closed.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Failed switching (check) valve. Then: failed air pump; water or carbon in the valve.
Owners named P2443 in 7 complaints to the U.S. government, most often on the Subaru Impreza.
Cars owners report it on
Complaints that name P2443, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2012 Toyota Tacoma
The details
What P2443 means
The valve that lets cold-start air into the bank 2 exhaust is stuck closed.
Can I drive with P2443?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
43% of the owner complaints that name P2443 also say the car loses power or goes into limp mode. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P2443
- Failed switching (check) valve
- Failed air pump
- Water or carbon in the valve
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Loses power or goes into limp mode: 43% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P2443 most
2012 Toyota Tacoma (2).
Related codes
P2442 P2444 P2441 P2445 P2440 P2450 P2433 P2432
Quick answers
What does P2443 mean?
Secondary Air Injection System Switching Valve Stuck Closed (Bank 2). The valve that lets cold-start air into the bank 2 exhaust is stuck closed.
Can I drive with P2443?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
What causes P2443?
Failed switching (check) valve; Failed air pump; Water or carbon in the valve.
Counts: NHTSA owner complaints whose text names P2443. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.