Powertrain, shared range

P34B2 A Camshaft Position Actuator Position Sensor A Circuit Low Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P34B2 is set when position sensor A on the intake phaser of bank 2 delivers a voltage below its permitted window. Public manufacturer information on this code is lacking. On the 2022 Mitsubishi Outlander the bank 1 version P34AE is evaluated by the electric valve timing module and traced to the actuator circuit or the actuator. Mercedes calls the corresponding low code of its CAMTRONIC exhaust sensors on bank 2 (P34C2) a ground short and, in bulletin LI05.20-P-080192, has the engine harness by the bulkhead inspected for scorching. A grounded signal wire, a missing sensor supply or a shorted sensor are therefore the first things to rule out on bank 2. High is P34B3, bank 1 P34AE.

Likely causes

Signal wire grounded, harness heat-damaged
Sensor supply interrupted
Sensor in the actuator shorted

Symptoms

  • Check engine light on
  • Bank 2 intake phasing switched off
  • Possibly codes from other sensors on the same supply

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–950
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

P34B0P34B1P34B3P34AEP2B45

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