P34C4A Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P34C4 is logged when the output stage feeding the bank 1 intake actuator A reports that its current or its own temperature has passed the permitted limit. The code belongs to electric phasers, where a small motor instead of an oil valve turns the camshaft. An Aisin patent shows the protective logic: a current sensor and a board temperature sensor sit on the motor driver, and if the board stays hot the controller first eases the motor off its end stop and later cuts the current. NTN-SNR files P34C4 under inlet adjustment, bank 1. Nissan drives both intake cams of the 2018 Pathfinder electrically from a separate module (NTB18-016), yet no public manufacturer text covers P34C4 itself. A binding phaser, sludged oil or a shorted motor winding are typical triggers. Bank 2 is P34C5.
- What you may notice
- Check engine light on
- Intake timing on bank 1 no longer adjusted, held at a fixed angle
- Weaker pull at low revs, rougher idle on a cold engine
- Likely causes
- LikelyPhaser stiff or held against its stop, motor draws high current for long
- PossibleLow or sludged engine oil making the phaser hard to turn
- PossibleWinding or motor lead of the bank 1 actuator shorted
- RareOutput stage or its sensors in the phaser control module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.