P34A8 code meaning
A Camshaft Position Actuator Temperature Sensor Circuit Bank 2
Powertrain system Generic code P34xx codes Check engine light
What P34A8 means
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.
P34A8 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P34A8
- Check engine light on
- Intake phasing on bank 2 restricted
Common causes of P34A8
- Most likelyPlug at the bank 2 actuator corroded or not latched
- PossibleHarness chafed near the cylinder head
- PossibleTemperature sensor failed
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Cam actuator a temp sensor b2Sensor wiring
What each part of P34A8 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 3 | Mixed range: generic and manufacturer-specific codes. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| A8 | The exact fault in that area. |
What to do next
- Note P34A8 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P34A8
What does P34A8 mean?
P34A8 means "A Camshaft Position Actuator Temperature Sensor Circuit Bank 2". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P34A8?
Drive gently and only to a workshop. With P34A8 the car can go into limp mode (reduced power) to protect itself.
Will P34A8 fail an emissions test?
Yes, it can. P34A8 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P34A8 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P34A8 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.