P34BA B Camshaft Position Actuator Temperature Sensor Circuit Low Bank 2

P34BA tells that the temperature signal from bank 2's exhaust actuator is pulled under its lower limit. Typical sources are a signal wire that has found ground, for instance where the harness runs close to hot exhaust parts, or a sensor element shorted inside the actuator. If the controller reads the low voltage as heat, it protects the actuator by reducing its current, as Aisin describes, so the bank 2 exhaust timing may no longer follow its target and timing codes such as P0024 can follow. The code is catalogued by NTN-SNR; no maker publishes it, so any threshold remains unknown. Repairs range from mending a wire to replacing the actuator, because the sensor sits in its electronics. Bank 1 low: P34B6; bank 2 high: P34BB.

Likely causes

Symptoms

• Malfunction indicator lamp lit
• Bank 2 exhaust timing limited, possibly with additional timing codes

Repair estimate

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

Parts involved

Related codes

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