Nissan Qashqai and Juke OBD-II Diagnostics: MR20, HR16 DIG-T, K9K dCi, CVT

Nissan Qashqai (J10/J11) and Juke are among the most popular compact crossovers in Europe. The variety of engines (MR20, HR16 DIG-T, K9K, R9M) and the Jatco CVT produce specific faults that diagnose well via OBD-II.

MR20DE / MR20DD 2.0 (Qashqai J10/J11): Naturally Aspirated Petrol

P0011 / P0021 — CVTC Variable Timing

Nissan CVTC (Continuously Variable Timing Control) — analogue of VANOS/VVT-i:

• P0011 — intake camshaft phase Bank 1: over-advanced
• P0021 — exhaust camshaft phase (if applicable): retarded

Live Data:

• CVTC Intake Actual vs Target: > 8° deviation on cold start → solenoid or oil pressure issue
• MR20DD (direct injection): also check CVTC Oil Pressure

Causes:

1. Fouled CVTC solenoid (can be cleaned without replacement if caught early)
2. Sprocket or chain wear after 100,000 km without regular oil changes

P0420 — Catalyst MR20

MR20 after 120,000 km:

• O2 B1S2 Switching Frequency > 0.5 Hz → catalyst has lost efficiency
• Check: P0420 without P013x → catalyst, not sensor

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HR16DE / HRA0DE 1.2 DIG-T (Qashqai J11): Small-Displacement Turbo

P0299 — Underboost 1.2 DIG-T

HR16DE with IHI turbocharger:

• Turbo hose leak — characteristic defect at 40,000–60,000 km
• Wastegate actuator — thermal damage

Live Data:

• Boost Pressure Target vs Actual at 3,000 RPM: > 20 kPa → leak or actuator
• Intake Air Temperature after Intercooler > 55°C → intercooler insufficient

P0340 — Camshaft Sensor 1.2 DIG-T

1.2 DIG-T has front timing chain:

• Cam Signal Stability → unstable on cold start → chain wear

P2187 — GDI Carbon 1.2 DIG-T

HR16DE DIG-T — direct injection without port injectors:

• STFT B1 > +10% at idle → valve carbon deposits
• Common problem with urban driving by 100,000 km

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K9K 1.5 dCi (Qashqai J10/J11): Renault-Nissan Diesel

P0087 — Rail Pressure K9K

K9K with CP3 or CP4 pump (depends on version):

• CP3 (pre-2010): more reliable, but Rail Pressure < 1,000 bar at 3,000 RPM → plunger wear
• CP4 (post-2010): sensitive to fuel quality

Live Data:

• Rail Pressure Actual at idle: normal 200–280 bar
• Rail Pressure Setpoint vs Actual > 30 bar under load → pump or pressure-relief valve

P0401 — EGR K9K

K9K EGR — clogs with soot after 80,000 km:

• EGR Mass Flow Rate Actual vs Target > 20% difference → valve partially blocked by soot

P2002 — DPF Efficiency K9K

K9K Euro 5 with DPF:

• DPF Soot Mass g > 22 g → forced regeneration needed
• DPF Regen Distance > 400 km without regeneration in city conditions → warning

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R9M 1.6 dCi (Qashqai J11): Modern Diesel

P0087 — CP4 Rail Pressure R9M

R9M (2013+) — shared Renault-Nissan engine:

• Bosch CP4 pump — known risk with poor fuel quality
• Rail Pressure Actual < 1,500 bar at 3,000 RPM → CP4 or injectors

P0299 — R9M Biturbo Underboost

Some Qashqai J11 versions have R9M bi-turbo:

• Turbo 1 vs Turbo 2 Boost Differential: > 20 kPa → small turbo failed

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Jatco CVT (JF015E / JF016E): CVT Transmission

Jatco CVT — the most complex and expensive system in Nissan Qashqai/Juke:

P0868 — CVT Line Pressure Low

• P0868 = line pressure below normal → CVT pump or belt wear
• CVT Line Pressure Actual: < 6 bar at 50 km/h → pump inspection needed

P1778 — CVT Step Motor

• P1778 = step motor for gear ratio positioning: fault
• CVT Step Motor Position: position doesn’t match command → step motor or wiring

P0776 — CVT Pressure Control Solenoid

• P0776 = pressure control solenoid fault
• Symptom: CVT “slipping” or “jerking” on startup

CVT ATF servicing:

• Jatco CVT requires genuine ATF NS-3 or NS-2 (cross-contamination incompatible!)
• Change every 60,000 km (NOT “lifetime”)
• After 120,000 km without change → P0868, P1778 may be irreversible

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OBD-II Specifics for Nissan

Nissan uses CAN ISO 15765 + proprietary CONSULT III protocol:

• Basic Mode 01: standard
• CVT and CVTC extended PIDs: only via CONSULT III or Nissan-compatible scanner

Important extended PIDs:

• CVT Belt Ratio Actual — CONSULT III only
• CVTC Oil Pressure B1 — Mode 22
• DPF Soot Mass R9M — Mode 22

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Summary: Nissan Qashqai / Juke

Model	Engine	Top Codes
Qashqai J10/J11	MR20DE/DD	P0011 CVTC, P0420 catalyst
Qashqai J11/Juke	1.2 DIG-T	P0299 turbo, P2187 carbon
Qashqai J10/J11	K9K 1.5 dCi	P0087 rail, P0401 EGR
Qashqai J11	R9M 1.6 dCi	P0087 CP4, P0299 biturbo
Qashqai/Juke	Jatco CVT	P0868, P1778, P0776

The Jatco CVT is the most expensive component in the Qashqai: regular genuine CVT ATF changes every 60,000 km can double the transmission’s service life.