CKFCar Known Faults
ModerateAffected: 2014-202160,000–100,000 miles

Nissan Qashqai J11 1.5 dCi 110bhp — DPF Pressure Sensor Pipe Split

A tiny rubber hose connecting the DPF to the exhaust pressure sensor splits frequently, causing limp mode and preventing DPF regeneration.

Severity

Moderate

DIY Difficulty

Easy

Est. Cost

£5–£100

OBD Codes

P1525P2454P0470
Component Diagram

DPF

Typical layout and location for the DPF assembly.

DPF diagram
Reference Illustration

Symptoms

  • Red Engine Management Light
  • Limp mode (severe loss of power)
  • 'Stop/Start System Fault' message
  • P1525 and P2454 fault codes

Root Cause

The rubber hose cannot withstand the extreme heat of the DPF and perishes, splitting open. The ECU reads 0 pressure and panics, shutting down systems.

How To Fix

  1. Locate the pressure sensor on the bulkhead and trace the rubber hose down to the exhaust.
  2. Find the split and replace the hose with high-temperature silicone hose (£5).
  3. The cheapest and easiest fix, but garages often misdiagnose this as a failed DPF and quote £1,000+.
  4. Clear fault codes and force a regeneration.

Estimated Repair Costs

Repair OptionEst. Cost (GBP)
DIY (parts only)£2–£40
Independent Garage£5–£100
Main Dealership£8–£160

Other Faults on This Variant

Electronic Parking Brake (EPB) Motor Failure

Severe
2014-202150,000–100,000 miles£200–£300

The electronic parking brake actuators on the rear brake calipers frequently seize or burn out, leaving the handbrake stuck on or refusing to engage.

Front Radar / Anti-Collision Sensor Failure

Minor
2014-202140,000–90,000 miles£600–£800

The front radar sensor (used for emergency braking) is poorly sealed and highly vulnerable to water ingress and stone chips, causing the entire safety system to shut down.

NissanConnect Infotainment Boot Loop

Minor
2014-201830,000–100,000 miles0

The NissanConnect touch screen system frequently freezes on the Nissan logo and reboot loops constantly, draining the battery if left.

Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.