The Lemon IndexThe secondary air pressure sensor reads too high.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Failed sensor. Then: wiring fault.
Owners named P2433 in 5 complaints to the U.S. government, most often on the Subaru Impreza.
Cars owners report it on
Complaints that name P2433, by model. Raw counts, not a failure rate: popular models get more complaints.
The details
What P2433 means
The secondary air pressure sensor reads too high.
Can I drive with P2433?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
40% of the owner complaints that name P2433 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 P2433
- Failed sensor
- Wiring fault
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Loses power or goes into limp mode: 40% of complaints
Share of complaints naming the code whose text also mentions each problem.
Related codes
P2432 P2431 P2440 P2441 P2442 P2443 P2422 P2444
Quick answers
What does P2433 mean?
Secondary Air Injection System Air Flow/Pressure Sensor Circuit High (Bank 1). The secondary air pressure sensor reads too high.
Can I drive with P2433?
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 P2433?
Failed sensor; Wiring fault.
Counts: NHTSA owner complaints whose text names P2433. 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.