The Lemon IndexThe EVAP vent valve circuit reads shorted.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Failed vent valve. Then: shorted wiring.
Owners named P0448 in 7 complaints to the U.S. government, most often on the Nissan Frontier.
Cars owners report it on
Complaints that name P0448, by model. Raw counts, not a failure rate: popular models get more complaints.
The details
What P0448 means
The EVAP vent valve circuit reads shorted.
Can I drive with P0448?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
29% of the owner complaints that name P0448 also say the car stalls or shuts off. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P0448
- Failed vent valve
- Shorted wiring
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Stalls or shuts off: 29% of complaints
Share of complaints naming the code whose text also mentions each problem.
Related codes
P0449 P0446 P0445 P0443 P0442 P0441 P0440 P043F
Quick answers
What does P0448 mean?
Evaporative Emission System Vent Control Circuit Shorted. The EVAP vent valve circuit reads shorted.
Can I drive with P0448?
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 P0448?
Failed vent valve; Shorted wiring.
Counts: NHTSA owner complaints whose text names P0448. 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.