Powertrain, generic (extended)

P2B36 A Camshaft Profile Actuator B Control Circuit/Open Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2B36 describes an open control circuit at the second profile actuator of the intake camshaft (camshaft A) on bank 2. A second bank exists only on V or boxer engines. No manufacturer documents this code publicly: the one known user of the series, GM's L3B, is an inline four and only sets the bank 1 code P2B33, where it treats 200 kΩ or more with the driver on as open. V engines with cam-lobe switching do exist, for example Audi's V6 with the valvelift system acting on the intake valves, but their fault codes are not published. CARB requires that output components be checked for circuit continuity and shorts. An open actuator means its cam sleeve cannot change position, so this bank runs without lift switching.

Likely causes

Actuator connector on bank 2 unplugged, loose or corroded
Open coil in actuator B
Broken control wire between engine module and bank 2

Symptoms

  • Check engine light on
  • Bank 2 intake stays on one lift profile, possibly uneven running between the banks

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–700
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

a camshaft profile actuator b b2wiring harnessecm

Related codes

P2B37P2B38P2B33P2B3CP001DP2B50

References: law.cornell.edu, gsi.ext.gm.com, audi-technology-portal.de.