P2B35 code meaning
A Camshaft Profile Actuator B Control Circuit High Bank 1
Powertrain system Generic code P2Bxx codes Check engine light
What P2B35 means
P2B35 is the short-to-voltage counterpart for intake-side actuator B on bank 1, the second of the sleeve-shifting solenoids on camshaft A. In GM's L3B tables (2019 and again 2025) this test runs while the output is off: if the control line shows 0.5 Ω or less towards the controller supply, a short to power is assumed, and 4 hits in 5 samples set a Type A code with the warning lamp on in the same drive. A wire rubbing against a powered circuit in the harness or an internal short in the solenoid are typical reasons. Because the control line no longer behaves as commanded, the cam sleeve cannot be moved reliably and this actuator drops out of lift switching. Open and ground faults are covered by P2B33 and P2B34.
P2B35 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2B35
- MIL on during the drive in which the fault appears
- Intake lift profile no longer changes as commanded
- Higher fuel use because cylinder deactivation is blocked
Common causes of P2B35
- Most likelyControl wire chafed against a powered circuit in the engine harness
- PossibleInternal short in actuator B
- Less likelyOutput stage in the engine control module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
A camshaft profile actuator b b1Wiring harnessECM
What each part of P2B35 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| B | Area: hybrid propulsion. |
| 35 | The exact fault in that area. |
What to do next
- Note P2B35 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2B35
What does P2B35 mean?
P2B35 means "A Camshaft Profile Actuator B Control Circuit High Bank 1". P2B35 is the short-to-voltage counterpart for intake-side actuator B on bank 1, the second of the sleeve-shifting solenoids on camshaft A. It is a generic code, so it means the same on every make.
Is it safe to drive with P2B35?
Drive gently and only to a workshop. With P2B35 the car can go into limp mode (reduced power) to protect itself.
Will P2B35 fail an emissions test?
Yes, it can. P2B35 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2B35 to fix?
Difficulty: medium. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P2B35 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.