The Lemon IndexThe variable valve lift system on bank 1 isn't switching as commanded.
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
Low or dirty oil. Then: failed rocker arm oil control solenoid.
Owners named P2646 in 9 complaints to the U.S. government, most often on the Chevrolet Malibu.
Cars owners report it on
Complaints that name P2646, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2015 Chevrolet Malibu · 2014 Chevrolet Malibu
The details
What P2646 means
The variable valve lift system on bank 1 isn't switching as commanded.
Can I drive with P2646?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
Common causes of P2646
- Low or dirty oil
- Failed rocker arm oil control solenoid
A shop should confirm the cause with a scan and tests before replacing parts.
Model years that report P2646 most
2015 Chevrolet Malibu (3), 2014 Chevrolet Malibu (3).
Related codes
P2637 P2635 P2615 P2610 P2609 P2601 P2600 P26A3
Quick answers
What does P2646 mean?
A Rocker Arm Actuator System Performance or Stuck Off (Bank 1). The variable valve lift system on bank 1 isn't switching as commanded.
Can I drive with P2646?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
What causes P2646?
Low or dirty oil; Failed rocker arm oil control solenoid.
Counts: NHTSA owner complaints whose text names P2646. 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.