Powertrain, shared range

P34B0 A Camshaft Position Actuator Position Sensor A Circuit Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P34B0 concerns the electrical circuit of position sensor A of the intake cam actuator on bank 2, so it only concerns V and boxer engines. No manufacturer publishes it. Mitsubishi documents the bank 1 code P34AC for the 2022 Outlander, which uses only the bank 1 codes: there the sensor reports the angle of the electric phaser motor, and a voltage outside its window for a second sets the fault. A two-bank engine with electric phasers would watch its second actuator in the same way. Mercedes, by contrast, files the sensors of its CAMTRONIC lift actuators under the position sensor A codes of camshaft B (P34BD, P34BE), so what the actuator is depends on the maker. Check plug, harness and actuator on bank 2.

Likely causes

Plug or harness to the bank 2 actuator open or shorted
Position sensor in the actuator failed
Control module fault

Symptoms

  • Check engine light on
  • Bank 2 intake phasing held in its base position
  • Possibly less power and uneven running between banks

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–950
Time0.5–3.5 h

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

Parts involved

cam actuator a pos sensor b2sensor wiring

Related codes

P34B1P34B2P34B3P34ACP2B43

References: law.cornell.edu, ntn-snr.com, mitsubishitechinfo.com, static.nhtsa.gov.