P17F1 Nissan: CVT judder detected, control unit (C/U) inspection needed

CVT judder, control unit inspection (Nissan)

P17F1 in short

On Nissan vehicles, P17F1 means the CVT computer detected judder, a shudder or vibration, and flags the control unit for inspection. Trade sources say that usually means a failed valve body, though Nissan bulletins often start with a computer reprogram. Have it inspected soon, and check for a bulletin or warranty extension.

Nissan CVTs compare engine speed with transmission input speed. When the computer has to keep correcting for judder, it logs P17F0 (transmission inspection) or P17F1 (control unit inspection).

The control unit here is the hydraulic control side of the CVT. Trade sources say P17F1 usually points to a failed valve body, the part that routes fluid pressure to the pulleys.

Nissan has bulletins for P17F1 on the Altima, Maxima, Murano, Pathfinder, Quest, Rogue, Rogue Sport, Versa and Kicks. Their first step is usually a computer reprogram. Misfires, sensor and ABS faults should be ruled out first because they can cause false judder detection.

Pick your make

P17F1 is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. Failed CVT valve body (control valve)

    Common general cause
    Why it ranks here
    Trade sources say P17F1 is usually a failed valve body.
    What would change this
    Rises if judder continues after the software is updated.

  2. Transmission computer software needs updating

    Supported by vehicle data
    Why it ranks here
    Nissan bulletins for P17F1 tell dealers to reprogram the transmission computer when an update applies.
    What would change this
    Rises if a bulletin covers your model and the computer has not been updated.
    How to test the transmission control module (tcm)

  3. Belt slip or internal CVT wear

    Possible — needs testing
    Why it ranks here
    Judder codes set when the belt slips, but trade sources tie belt slip more to P17F0 than to P17F1.
    What would change this
    Rises if the engine revs flare on acceleration.

  4. Misfire, sensor, ABS or electrical faults causing false judder detection

    Possible — needs testing
    Why it ranks here
    Trade sources advise ruling these out first because they can make the computer think the CVT is juddering.
    What would change this
    Rises if misfire, wheel speed or sensor codes are stored too.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all codes from the engine, transmission and ABS computers before anything is cleared.

    Low riskTool: scan tool that reads the transmission and ABS modules

  2. Ask a Nissan dealer to check your VIN for P17F1 bulletins and CVT warranty extensions.

    Low risk

  3. Have a dealer or CVT specialist follow Nissan's diagnosis for judder, including a road test and fluid check.

    Best left to a shopTool: Nissan diagnostic equipment

    Warning:Shop job. CVT diagnosis and repairs need the maker's procedures and tools.

Symptoms

  • Judder, shudder or vibration when pulling away or at low speed
  • Check engine light
  • Reduced power or limp-home mode Gets more serious: stop and have it checked.

How to fix

  1. Before paying for repairs, ask a Nissan dealer whether a bulletin or CVT warranty extension covers your VIN.

  2. Fix any misfire or ABS fault first, then recheck whether P17F1 returns.

Parts and cost context

  • Transmission control module (TCM):Nissan's first fix is often reprogramming the existing computer. The usual hardware repair for P17F1 is the valve body, not the computer.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Nissan

  • 2013–2023 · Altima

    Supported by vehicle data

    Nissan NTB17-039R covers P17F0 or P17F1 on Altima, Maxima, Murano, Pathfinder and Quest CVTs. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • 2014–2017 · Rogue

    Supported by vehicle data

    Nissan NTB16-110Q covers 4-cylinder Rogue (and 2013–2017 Altima) with judder codes including P17F0 and P17F1. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • 2018–2020 · Rogue

    Supported by vehicle data

    Nissan NTB19-076C covers 2018–2020 Rogue and Altima with judder codes including P17F0 and P17F1. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • 2018–2022 · Versa

    Supported by vehicle data

    Nissan NTB22-021A covers Versa and Kicks with CVT codes including P17F0 and P17F1. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • 2017–2019 · Rogue Sport

    Supported by vehicle data

    Nissan NTB21-051A covers 2017–2019 Rogue Sport with judder codes including P17F0 and P17F1. The bulletin is on NHTSA, but whether it is still current is not verified, so it is labelled vehicle data rather than confirmed.

  • NTB17-039RStatus unverified

    DTC P17F0 or P17F1 stored in the TCM

    2013–2023altima, maxima, murano, pathfinder, quest · issued · NHTSA 11001202

    Covers P17F0 or P17F1 stored in the transmission computer on 2013–2023 Altima, Maxima, Murano, Pathfinder and Quest; amended several times. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • NTB16-110QStatus unverified

    P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored (4-cylinder)

    2013–2017altima, rogue · issued · NHTSA 10206371

    Covers 2013–2017 Altima and 2014–2017 Rogue 4-cylinder models with P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • NTB19-076CStatus unverified

    P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored

    2018–2020altima, rogue · issued · NHTSA 10213159

    Covers 2018–2020 Altima and Rogue with P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • NTB22-021AStatus unverified

    P0746, P0776, P0841, P0965, P17F0 and/or P17F1 stored in the TCM

    2018–2022kicks, versa · issued · NHTSA 10232664

    Covers 2018–2022 Kicks and Versa with P0746, P0776, P0841, P0965, P17F0 and/or P17F1 stored in the transmission computer. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • NTB21-051AStatus unverified

    P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored

    2017–2019rogue-sport · issued · NHTSA 10206378

    Covers 2017–2019 Rogue Sport with P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored. Only the NHTSA flat-file summary was reviewed, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P17F0Nissan: CVT judder detected, transmission (T/M) inspection needed

    Same system Supported by vehicle data

    P17F0 is the matching judder code that flags the transmission itself; Nissan bulletins cover both.

  • P0776Pressure control solenoid B not working as expected or stuck off

    Same system Supported by vehicle data

    Nissan bulletins list P0776 (pressure control solenoid B) alongside P17F1 on the same CVTs.

  • P0841Transmission fluid pressure sensor or switch reading does not make sense

    Same system Supported by vehicle data

    Nissan bulletins list P0841 (fluid pressure sensor) alongside P17F1.

All Transmission codes

Sources and review

  1. Nissan NTB15-083: CVT judder, DTC P17F0 / P17F1 — Nissan North America (read via CarComplaints.com mirror) ,
  2. Nissan CVT Judder Codes and Diagnostics: What Sets P17Fx Codes and How to Repair Them — GEARS Magazine (Keith Clark) ,
  3. Cal. Code Regs. Tit. 13, § 1968.2 — Malfunction and Diagnostic System Requirements (OBD II) — California Air Resources Board (via Cornell LII)
  4. Nissan NTB17-039R: DTC P17F0 or P17F1 stored in the TCM — Nissan North America ,
  5. Nissan NTB16-110Q: 4-cylinder Altima and Rogue with P17F0, P17F1, P0776, P2813, P1715 and/or P0841 — Nissan North America ,
  6. Nissan NTB19-076C: DTC P17F0, P17F1, P0776, P2813, P1715 and/or P0841 stored — Nissan North America ,
  7. Nissan NTB22-021A: DTC P0746, P0776, P0841, P0965, P17F0 and/or P17F1 stored in the TCM — Nissan North America ,
  8. Nissan NTB21-051A: 2017–2019 Rogue Sport with P17F0, P17F1, P0776, P2813, P1715 and/or P0841 — Nissan North America ,
Last reviewed
Written by
Saurabh K.
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