P1715 on 2013-2020 Nissan Pathfinder: CVT Input Speed Sensor Causes and Fixes

What's Unique About the 2013-2020 Nissan Pathfinder

The 2013-2020 (R52 generation) Pathfinder exclusively uses a Jatco-supplied Continuously Variable Transmission (CVT), specifically the Jatco JF017E (Nissan RE0F10E/J) for the V6 engine. This transmission is known for a specific failure pattern where the internal steel push belt (often called a chain) stretches or slips, or the hydraulic valve body fails. Unlike many other vehicles where a speed sensor code points to a simple sensor swap, on this Pathfinder, P1715 is a strong and well-documented indicator of an impending and often catastrophic transmission failure requiring expensive repairs. Nissan TSBs explicitly state that if P1715 is the only code present, the diagnostic bulletin for common CVT failures does not apply, but this is a rare scenario; it almost always appears with other codes like P0776.

Symptoms You May Notice

• Hesitation or a noticeable delay when accelerating.
• A feeling of juddering, shaking, or shuddering from the transmission 🎬 Watch: Why your Nissan CVT is shaking and shuddering, especially at low speeds.
• Lack of power, making it difficult to get up to highway speed or climb hills.
• Engine RPMs rise, but the vehicle's speed does not increase accordingly (transmission slipping).
• Whining or humming noises from the transmission.
• Vehicle may enter a 'limp mode' with severely reduced speed.
• Check Engine Light is illuminated.
• Vehicle may stall when shifting from Park or Neutral into Drive or Reverse.

Most Likely Causes

1. Internal CVT Failure (Stretched or Damaged Drive Belt) 🔴 High Probability The steel push belt (technically a chain in the JF017E) inside the Jatco CVT is a known weak point that can stretch, slip, or be damaged by wear and improper hydraulic pressure, causing the speed discrepancy that triggers P1715.
   How to confirm: A technician must follow the procedure in Nissan TSBs (like NTB18-077D), which involves removing the transmission oil pan and valve body to visually inspect the CVT chain with a borescope for scoring, scuffing, or damage.
   Typical fix: Complete replacement of the CVT assembly with a new or remanufactured unit.
   Est. part cost: $3000-$5500
2. Failing CVT Control Valve Body 🟡 Medium Probability → Shop Transmission Valve Body The valve body is the hydraulic brain of the CVT. Its solenoids can fail, or its passages can become clogged with debris from a deteriorating belt, leading to incorrect pressure control and belt slippage. Wear in the pressure regulator valve bores is a common failure point.
   How to confirm: This is the default diagnosis if a borescope inspection shows the CVT belt is NOT damaged. The diagnosis is often made when P1715 appears with pressure-related codes like P0776.
   Typical fix: Replace the entire CVT valve body assembly and reprogram the Transmission Control Module (TCM).
   Est. part cost: $900-$2000

Rare But Worth Checking

• Wiring Harness or Connector Issue: While rare, an open or short in the CAN communication line or the sensor circuit itself could trigger the code. This should only be investigated after the common mechanical causes are ruled out. TSBs note to check for other U-codes (communication codes) first.
• Failed Transmission Control Module (TCM): → Shop Transmission Assembly A standalone TCM failure is uncommon. The TCM is often integrated with or replaced as part of the valve body assembly. Some TSBs note that if P1715 is the only code present, the issue may be electronic, but this is not the typical scenario.

Diagnosis Steps

1. Verify the code with a professional OBD-II scanner.
2. Check for other related DTCs, especially P0776, P17F0, or P0841. The combination of codes is key to diagnosis.
3. Check the transmission fluid level and condition. Dark, burnt, or metallic-flecked fluid is a strong indicator of catastrophic internal failure.
4. Check for any applicable TSBs or warranty extensions for your vehicle's VIN. Nissan extended the CVT warranty for many 2015-2018 Pathfinders to 84 months or 84,000 miles.
5. Follow the diagnostic flowchart from relevant Nissan TSBs (e.g., NTB18-077D, NTB19-076C). This involves removing the oil pan and valve body.
6. Perform a borescope inspection of the internal CVT drive belt. Look for scuffing, scratches, or other signs of damage on the sides of the belt.
7. If the belt is damaged, the CVT assembly must be replaced.
8. If the belt is NOT damaged, the valve body is the likely culprit and should be replaced.
9. After replacing the valve body or entire CVT, the TCM must be reprogrammed/recalibrated using a compatible scan tool like Nissan's CONSULT.
10. Perform a final road test to confirm the repair and ensure no judder or hesitation remains.

Parts You'll Likely Need

• Continuously Variable Transmission (CVT) Assembly (OEM #31020-3WX5E (AWD, 2017-2020), 31020-3WX2E (AWD, 2015-2016), 31020-3WX0E (AWD, 2013-2014)) — This is the most common fix, required when a borescope inspection confirms the internal drive belt is damaged.
  Trusted brands: Nissan OE Remanufactured
  OEM price range: $3500-$5500
  Aftermarket price range: $3000-$4500
• CVT Control Valve Body (OEM #31705-29X8A (supercedes 31705-29X2A, 31705-29X3A, 31705-29X5A)) — This is the fix when the CVT belt is confirmed to be intact but hydraulic control is faulty, often indicated by code P0776 appearing with P1715.
  Trusted brands: Nissan OE
  OEM price range: $900-$1500
  Aftermarket price range: $650-$1200

Related Codes That Often Appear With This One

• P0776 — This code for 'Pressure Control Solenoid 'B' Performance' is the most common companion to P1715. Nissan TSBs have a specific diagnostic path for this combination, pointing directly to either a failed valve body or a damaged CVT belt.
• P17F0 / P17F1 — These codes indicate 'CVT Judder' (vibration). They are triggered by the same physical belt and pulley problems that cause the speed discrepancy of P1715. Seeing them together is a near-certain confirmation of internal CVT damage.
🎬 See a real-world example of Pathfinder CVT judder diagnosis
• P0841 — This code for 'Transmission Fluid Pressure Sensor/Switch 'A' Circuit' also points to a problem in the hydraulic control system (valve body) and is often included in the same TSBs as P1715.

Technical Service Bulletins (TSBs) & Recalls

• NTB18-077D: An important TSB that addresses P0776 and P1715. It provides a specific flowchart for inspecting the CVT belt with a borescope and deciding whether to replace the valve body or the entire CVT assembly.
• NTB19-076C / NTB15-083: TSBs for other models with similar CVTs that address judder (P17F0/P17F1) and codes including P1715, outlining the same diagnostic process of belt inspection.
• NTB12-103: Details the mandatory TCM recalibration procedure required after replacing a CVT or valve body.
• NTB15-015e: Specifically addresses CVT judder (P17F1) in 2013-2016 Pathfinders and recommends valve body replacement.
• NTB17-039h: Details the procedure for replacing the CVT sub-assembly (chain and pulleys) for judder complaints (P17F0/P17F1), which is the root cause of the P1715 code.
• TSB Bulletin #NTB19-060B: A manufacturer bulletin for other Nissan models (NV200/Taxi) that addresses stored codes including P17F0, P17F1, P0776, P2813, P1715, and P0841.
• TSB Bulletin #NTB19-060D: An updated manufacturer service bulletin noting that P1715 and related codes P17F0, P17F1, P0776, P2813, and P0841 may be stored in the TCM.
• TSB Bulletin #NTB20-091A: A technical bulletin for the Nissan Juke that lists P1715 alongside P17F0, P17F1, P0776, P2813, and P0841 as stored diagnostic trouble codes.

Platform-Specific Known Issues

• Nissan extended the original CVT warranty on some 2015-2018 Pathfinders to 84 months (7 years) or 84,000 miles due to the high failure rates. Owners should check with a dealer to see if their specific VIN is covered.
• This issue is the subject of multiple class-action lawsuits against Nissan (e.g., Stringer et al. v. Nissan) due to its prevalence across multiple models using the same family of CVT. Settlements have resulted in warranty extensions and reimbursements for some owners.

Mechanic-Grade Diagnostic Values

• Valve Body Solenoid Resistance (JF017E) — expected: 5.5 - 8.5 Ohms. Failure: A reading outside this range indicates a failed solenoid.
• TCC Solenoid Resistance (JF017E) — expected: 6.1 - 7.7 Ohms. Failure: A reading outside this range indicates a failed TCC solenoid.

Scan Tool Commands That Help

• Nissan CONSULT-III+ or compatible (e.g., Launch, Autel): WRITE IP CHARA - REPLACEMENT AT/CVT — This is mandatory after replacing the entire CVT assembly or the control valve body. It writes the unique calibration data from a QR code or CD that comes with the new part to the TCM. Failure to do this will result in improper operation and may void the part warranty.
• Nissan CONSULT-III+ or compatible: CLUTCH POINT LEARNING — This procedure must be performed after replacing the control valve body. It allows the TCM to learn the new engagement points of the clutches.
• Nissan CONSULT-III+ or compatible: CONFORM CVTF DETERIORTN — This command resets the CVT fluid life counter to zero. It must be performed after replacing the fluid, valve body, or the entire transmission assembly to ensure the maintenance minder is accurate.

Wiring & Ground Locations

• TCM (Transmission Control Module) — On the 2013 Pathfinder, the TCM is located in the engine compartment, at the left front. On some other Nissan models, it is located inside the transmission, attached to the valve body.. The TCM receives the signal from the input speed sensor and compares it to other data to determine if a fault exists. All diagnostic wiring checks for the sensor circuit will terminate at the TCM connector.
• Input Speed Sensor — Located on the outside of the transmission case, facing the front of the car. To access it, the starter motor must be removed.. This is the sensor that generates the signal at the heart of the P1715 code. While the sensor itself is rarely the fault, its wiring and connector are potential, though uncommon, points of failure.
• Ground Point E15 — Located on the left rear of the engine compartment.. This is a primary ground point for various engine and transmission components. A poor connection here could potentially cause erratic sensor readings, although it is not a commonly cited cause for P1715.
• Transmission Main Connector — Large multi-pin connector on the exterior of the CVT case, where the main vehicle harness connects to the transmission's internal wiring, including the valve body and sensors.. This is a critical point for checking continuity and for shorts/opens in the input speed sensor circuit between the sensor and the TCM.

Real Owner Repair Stories

• Reddit user on r/Nissan (2014 Nissan Pathfinder) — Bad lurching, 5-second delay before engaging Drive or Reverse, vehicle could barely get up to speed.
  ❌ Tried (didn't work) Replaced the CVT valve body with an aftermarket unit from Amazon that claimed it did not need programming.
  ✅ What actually fixed it The aftermarket valve body caused a violent shake and new codes (P0746, P0847, P084C, P17F0). The resolution required getting an OEM valve body that comes with a mandatory calibration CD/QR code and having it programmed to the TCM. The story highlights that non-programmable aftermarket valve bodies are a trap and do not work.
• NHTSA ODI #11296924 — An owner of a Nissan vehicle reported that the car stutters when turning and runs poorly all the time; a technician found codes P1715, P2765, and P0965.

OEM Part Supersession History

• 31705-29X2A, 31705-29X3A, 31705-29X5A, 31705-29X5D, 31705-29X7A → 31705-29X8A — Revisions to address reliability issues with solenoids and hydraulic regulation. Each new part number represents an updated version of the CVT control valve body.
  Heads up: While all listed parts are for the same application, it is critical to use the latest available part number (31705-29X8A) when replacing. Aftermarket valve bodies that claim 'no programming needed' are a known cause of post-repair failure.

Model Year Variations Within This Range

• 2013-2014: Uses CVT designation RE0F10E.
• 2015-2020: Uses CVT designation RE0F10J. While both are part of the Jatco JF017E family, there may be internal and software differences. Part numbers for the transmission assembly differ for these year ranges.
• 2014 (Hybrid): The Pathfinder Hybrid uses a different CVT, the Jatco JF018E (Nissan RE0F02H), which is designed for a supercharged 2.5L engine. While similar in principle, its components and failure modes may differ.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• Failing A/C Compressor 🟠 Medium — Commonly reported failure, often occurring outside of the standard warranty period. The compressor clutch may fail to engage or the compressor itself may fail internally.
• Premature Wheel Bearing Failure 🟠 Medium — Owners report humming or grinding noises from the wheel hubs, requiring bearing replacement at lower-than-expected mileage. (Ref: NTB10-029G (addresses rear differential noise/judder, but bearing noise is a separate common complaint))
• Faulty Sun Visors 🟡 Low — A very common complaint where the internal mechanism of the sun visor fails, causing it to droop and not stay in the upright position.
• Automatic Emergency Braking (AEB) Malfunction 🔴 High — Some owners report the AEB system engaging unexpectedly when no obstacle is present, causing sudden and dangerous braking.
• Clicking Noise from Axles on Acceleration 🟡 Low — A clicking noise from the front or rear axles during takeoff is a known issue across many Nissan models, including the Pathfinder. (Ref: NTB21-013a)

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: Due to the extremely high failure rate of the Jatco CVT, buying a used transmission assembly is highly risky and generally not recommended. It only makes sense if the donor vehicle is a very low-mileage wreck (e.g., under 50,000 miles) and you can verify it had no prior transmission issues. A used valve body is never recommended due to the requirement for specific calibration data that is tied to the part and often lost.

Donor-vehicle mileage cap: roughly under 60000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Verify the donor vehicle's mileage is low.
• Confirm the reason for the vehicle being salvaged was not related to engine or transmission failure.
• Ask the seller if the transmission was slipping or showing any symptoms before removal; do not buy if it was.
• Check service records if possible to see if CVT fluid changes were performed with genuine Nissan NS-3 fluid. Use of incorrect fluid is a common cause of failure.

OEM-only on this vehicle (don't cheap out):

• CVT Control Valve Body: Aftermarket valve bodies, especially those claiming 'no programming needed', are a common source of failure. An OEM part with its corresponding calibration CD/QR code is mandatory for a successful repair.
• CVT Assembly: While remanufactured aftermarket units exist, a Nissan OE remanufactured unit is the safest bet for longevity.

Brands owners have reported issues with on this vehicle:

• Any valve body sold on Amazon, eBay, or other online marketplaces that claims it is 'pre-programmed' or 'does not require programming'. These are known to cause severe drivability issues and additional fault codes.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• P0776 — Pressure Control Solenoid 'B' Performance/Stuck Off. This is a very common companion code to P1715. TSB NTB18-077D provides a unified diagnostic for both, as a failing valve body or internal debris can cause the hydraulic pressure fault that triggers P0776.
• P17F0 — CVT Judder (Chain Slip). This manufacturer-specific code indicates the CVT's drive belt is physically slipping. This slip is the direct event that causes the speed discrepancy logged by P1715, making P17F0 a root-cause indicator.
• P17F1 — CVT Judder (T/C Lock-up). Similar to P17F0, this code points to severe judder. It is frequently seen with P1715 and is addressed by TSBs like NTB15-015e, which often recommend valve body or full CVT replacement to resolve the underlying mechanical issue.
• P0841 — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Range/Performance. This code can appear with P1715 if a failing valve body or widespread internal debris is causing erratic hydraulic pressure, leading to implausible readings from the pressure sensors.

Frequently Asked Questions