HomeP0840 · Code meaning and manufacturer information
Powertrain

P0840

Code meaning and manufacturer information

P0840

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer communications

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Original wording in English

NTB-09-148

NISSAN

Reported code forms P0840

NISSAN: MIL ON W/DTC P0840, P0845, P0744, P1777. REPLACE THE CONTROL VALVE ASSEMBLY WITH PART LISTED; REFERENCE SECTION TM, CONTROL VALVE REMOVAL AND INSPECTION IN APPROPRIATE ESM; ERASE EEP ROM CALIBRATION DATA IN TCM…

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NTB:09-044

NISSAN

Reported code forms P0840

NISSAN: AFFECTED VEHICLES HAS CVT FLUID AND THAT IS DISCOLORED AND/OR HAS UNUSUAL ODOR. MIL IS ON WITH DTCS P0840 AND/OR P0845 STORED IN CONSULT III/ENGINE AND /OR TRANSMISSION. THE MIL IS ON AND P0710 IS STORED IN…

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Check vehicle applicability

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
NissanROGUE2008

Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.