The Lemon IndexThe flaps inside the bank 1 intake manifold are stuck open.
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
Carbon buildup on the runner flaps. Then: failed runner actuator; vacuum leak to the actuator.
Owners named P2004 in 20 complaints to the U.S. government, most often on the Dodge Avenger.
Cars owners report it on
Complaints that name P2004, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2008 Dodge Avenger · 2016 Nissan Rogue · 2021 Subaru Crosstrek
The details
What P2004 means
The flaps inside the bank 1 intake manifold are stuck open. Power and smoothness can suffer.
Can I drive with P2004?
Drive on, get it checked. You can usually keep driving. Have the code read at your next service or within a few weeks.
15% of the owner complaints that name P2004 also say the car shakes, runs rough or misfires. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P2004
- Carbon buildup on the runner flaps
- Failed runner actuator
- Vacuum leak to the actuator
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Shakes, runs rough or misfires: 15% of complaints
- Brakes or ABS act up: 15% of complaints
- Stalls or shuts off: 15% of complaints
- Loses power or goes into limp mode: 15% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P2004 most
2008 Dodge Avenger (3), 2016 Nissan Rogue (2), 2021 Subaru Crosstrek (2).
Related codes
P2005 P2002 P2006 P2007 P200A P2015 P2096 P2097
Quick answers
What does P2004 mean?
Intake Manifold Runner Control Stuck Open (Bank 1). The flaps inside the bank 1 intake manifold are stuck open. Power and smoothness can suffer.
Can I drive with P2004?
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 P2004?
Carbon buildup on the runner flaps; Failed runner actuator; Vacuum leak to the actuator.
Counts: NHTSA owner complaints whose text names P2004. 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.