Powertrain, shared range

P34A8 A Camshaft Position Actuator Temperature Sensor Circuit Bank 2

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P34A8 mirrors P34A4 on bank 2: the module detects an open or otherwise faulty circuit at the temperature sensor of intake cam actuator A on the side without cylinder 1. Only V and boxer engines have this bank. The one documented user of the family, Nissan's electric intake valve timing on the 2018 Pathfinder and QX60, monitors both banks separately (range codes P34A5 and P34A9), yet P34A8 itself turns up in no manufacturer document we could find. NTN-SNR describes it as an electrical fault of the inlet-side temperature sensor on the second bank. Typical findings are a corroded plug, a chafed harness near the cylinder head or a failed sensor. Range, low and high are P34A9, P34AA and P34AB.

Likely causes

Plug at the bank 2 actuator corroded or not latched
Harness chafed near the cylinder head
Temperature sensor failed

Symptoms

  • Check engine light on
  • Intake phasing on bank 2 restricted

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–750
Time0.5–3 h

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

Parts involved

cam actuator a temp sensor b2sensor wiring

Related codes

P34A9P34AAP34ABP34A4P34B8

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