P1722: Estimated vehicle speed signal fault in a Nissan automatic or CVT; a different stall speed fault on Jaguar
Nissan P1722 estimated vehicle speed signal
Severity: Severity not verified — if the car runs badly, have it inspected
Owners report limp mode and CVT replacement with this code, but we found no source that sets a safe driving limit.
It gets more serious if:
- Inspect soon: The vehicle drops into limp mode, will not move well, or shifts harshly.
P1722 in short
On Nissan, P1722 means the estimated vehicle speed signal used by the transmission computer is wrong; on Jaguar it is listed as a stall speed failure. Nissan owners with it report limp mode and CVT trouble. We could not verify how far it is safe to drive, so get it scanned soon.
The Nissan transmission computer works out an estimated vehicle speed from its own inputs and checks it against other signals. When they disagree, it stores P1722, and a Nissan bulletin for the 2003 Murano pairs it with P0725, the engine speed signal.
On 2012 Sentra and Quest CVTs, technicians read P1722 beside P0744 and P1778 step motor codes and called the CVT internally damaged; one Sentra dropped into limp mode from 70 to 10 mph.
Jaguar uses the number for a stall speed failure, a different fault. We found only one Jaguar report, so treat that meaning as thinly supported.
Pick your make
P1722 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
Cause 1: Internal CVT problem (step motor, valve body or clutch)
Supported by vehicle data- Why it ranks here
- Sentra and Quest technicians read P1722 with P1778 step motor and clutch solenoid codes and recommended CVT replacement.
- What would change this
- Rises if P1778 or P0744 are stored and the vehicle goes into limp mode. Falls if P1722 is the only code and the vehicle drives normally.
Cause 2: Speed or engine speed signal problem
Supported by vehicle data- Why it ranks here
- A 2003 Murano bulletin pairs P1722 with P0725 engine speed signal, so the signal path is worth checking first.
- What would change this
- Rises if P0725 or speed sensor codes are also stored. Falls if the signals read normally.
Cause 3: Transmission stall speed failure (Jaguar)
Possible — needs testing- Why it ranks here
- One XK8 readout lists this meaning with a gear 4 range code; it is a single report.
- What would change this
- Rises only on a Jaguar with torque converter or clutch symptoms.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: Read all codes and note whether P0725, P0744, P1778 or other speed codes are stored with P1722.
IfP0725 or speed sensor codes are stored
It meansStart with the speed and engine speed signals.
IfP1778 or P0744 are stored and the vehicle hesitates or enters limp mode
It meansThe CVT may have internal damage; go to the shop check.
Step 2: Have a shop compare the transmission speed, engine speed and vehicle speed readings on a scan tool and inspect the sensors and wiring.
Warning:Do not road-test hard on a transmission that slips or enters limp mode.
IfA signal drops out or disagrees
It meansRepair that sensor or wiring.
IfSignals are fine but the CVT shows step motor or solenoid codes
It meansInspect the CVT internals.
Points to: Internal CVT problem (step motor, valve body or clutch)
Symptoms
- Check engine light on
- Delayed or harsh engagement Gets more serious: stop and have it checked.
- Limp mode or sudden speed loss Gets more serious: stop and have it checked.
Compare with: Check engine light with loss of power
How to fix
Step 1: Do not clear the code before a shop has read it; the stored data helps separate a sensor fault from CVT damage.
On your vehicle
NissanYour car
2003 · Murano
Supported by vehicle dataA 2003 Murano bulletin covers P1722 with P0725; an owner was told the CVT valve body was the cause.
2012 · Sentra
Supported by vehicle data2012 Sentra owners report P1722 with P0744 and P1778, limp mode and internal CVT problems.
2012 · Quest
Supported by vehicle dataA 2012 Quest readout lists P1722 with step motor and solenoid codes and a recommended CVT replacement.
04061Status unverified
P0725 engine speed signal and P1722 estimated vehicle speed signal
2003murano · NHTSA 10007553
Covers the two speed signal codes on the 2003 Murano; the summary does not give the repair.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
JaguarYour car
1998 · XK
Possible — needs testingA 1998 XK8 readout lists P1722 as stall speed with P0734 and a replacement transmission quote.
Related codes
Sources and review
- NHTSA complaint 1466797: 2012 Nissan Sentra, P0744, P1722, P1788
- NHTSA complaint 942657: 2003 Nissan Murano, P1722
- NHTSA complaint 1466478: 2012 Nissan Sentra, P1722, P0744, P1778
- NHTSA complaint 1255931: 2012 Nissan Quest, several transmission codes including P1722
- Nissan bulletin 04061: P0725 engine speed signal and P1722 estimated vehicle speed signal
- P1722 manufacturer-specific definitions
- NHTSA complaint 686055: 1998 Jaguar XK8, P1722 and P0734
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error