Output Speed Sensor Circuit No Signal
The P0722 code means the vehicle's onboard diagnostic system has detected: Output Speed Sensor Circuit No Signal. This is a critical severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- hard
- Estimated cost
- $100 - $350 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
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Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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Common Symptoms
- Check Engine Light illuminated
- Speedometer reads zero while driving
- Transmission stuck in one gear
- Limp mode activated
Probable Causes (Ranked by Likelihood)
- Failed output speed sensor Very High
- Broken output speed sensor wiring High
- Damaged reluctor ring on output shaft Moderate
- TCM output speed input circuit failure Low
Step-by-Step Diagnostic Procedure
-
Verify output speed sensor reads 0 MPH on scan tool while driving
-
Inspect the sensor connector for disconnection
-
Measure sensor AC voltage output while the vehicle moves -- no voltage confirms no signal
-
Check wiring from sensor to TCM for continuity
-
Remove sensor and inspect reluctor ring for damage or missing teeth
Common Fixes by Vehicle
What techs usually find when diagnosing P0722 on specific vehicles — tap your vehicle for the fix and the exact part:
2007-2018 GM Silverado/Sierra 6L80E Easy (sensor), Advanced (reluctor) DIY
Output speed sensor no-signal on the 6L80E is commonly caused by a sheared sensor drive gear or broken reluctor ring inside the tail housing. The sensor itself is on the rear of the transmission near the output shaft. Check for metal shavings in the fluid -- if present, the reluctor ring has broken and you'll need to drop the tail housing to replace it. Otherwise just replace the sensor (AC Delco 24227793).
Labor: 30 min (sensor), 3-4 hours (reluctor ring)2003-2016 Nissan Altima/Rogue CVT Moderate DIY
Nissan CVT output speed sensor (also called vehicle speed sensor) fails when metal particles from the steel belt contaminate the sensor. Located on the transaxle case near the differential. Pull the sensor and check for metallic buildup on the tip. If CVT fluid is dark or smells burnt, the transmission may have internal damage beyond just the sensor. Replace sensor and do a full CVT fluid exchange with Nissan NS-3 fluid only.
Labor: 0.5-1 hour2005-2017 Ford F-150/Explorer 6R80 Easy DIY
The 6R80 output shaft speed sensor is located on the rear of the transmission. No-signal faults are often wiring related -- the harness runs near the catalytic converter and heat can melt the insulation. Inspect the harness from the sensor connector back to the main transmission plug for heat damage. If wiring is intact, replace the sensor (Motorcraft DY-1225). TSB 16-0137 covers connector corrosion on 2011-2014 F-150s.
Labor: 30-45 minFrequently Asked Questions
Can I drive with code P0722?
Do not drive. Output Speed Sensor Circuit No Signal can cause unsafe or unpredictable transmission behavior.
What causes P0722?
The most common cause is a faulty sensor or wiring issue. Failed output speed sensor is the most likely cause.
Is P0722 expensive to fix?
Typical repair costs range from $100 - $350 (parts and labor). Sensor replacement is the most common fix.
Sources
This page is built from documented references. Verify against your own service info before repair work.
P0722 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
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