U1000: Manufacturer Controlled DTC
What Does U1000 Mean?
U1000 is a diagnostic trouble code indicating: Manufacturer Controlled DTC. This code relates to the network communication system. It has been reported in NHTSA complaints across 7 different vehicle models.
Symptoms of U1000
- ⚠️ Check engine light illuminated
- ⚠️ Hesitation during acceleration
- ⚠️ Unusual vibrations
- ⚠️ Vehicle enters limp/reduced power mode
- ⚠️ Failure to accelerate
Common Causes
- 🔍 Stuck or failed EGR valve
- 🔍 Wiring or connector problem
- 🔍 Transmission component failure
- 🔍 Sensor or control module malfunction
U1000 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"CAR WILL THROW CODES P0700/U0073/U1000 - LOOSES ENGINE POWER, CHECK STABILITRAK LIGHTS UP, CHECK ENGINE LIGHT COMES ON. CAR WILL BUCK, ODOMETER/RPM GAUGE/TEMP GAUGE WILL BECOME ERRATIC. TOOK TO THE CHEVY DEALERSHIP, UNABLE TO REPLICATE PROBLEM. UNSAFE TO DRIVE. DOESN'T HAPPEN DAILY - SOMETIMES CAR "
— Chevrolet Equinox owner, 01/01/2019
"2011 NISSAN ALTIMA SR SEDAN 3.5 CVT. WHEN DRIVING, CVT GOES INTO SAFE MODE WITH REDUCED ACCELERATION, INDICATING A TRANSMISSION ISSUE AND WOULD ALSO TRIGGER VEHICLE DYNAMIC CONTROL SYSTEM FAULT.. ORIGINAL ENGINE CODE WAS P0175. HAD MECHANIC REPLACE 31935-1XF00 SPEED SENSOR ASSY. PROBLEM WAS NOT "
— Nissan Altima owner, 12/15/2016
"I JUST RECENTLY REPLACED THE BATTERY IN MY 2012 NISSAN ALTIMA AND NOW I AM HAVING THE FOLLOWING PROBLEMS: GAUGE CLUSTER IS NOT WORKING AT ALL (ENGINE TEMP, RPM, SPEEDOMETER, GAS). EVERYTHING ELSE IS WORKING FINE. I HAD ALL THE FUSES CHECKED AND ALL ARE WORKING PROPERLY. I TOOK TO DEALER, THEY ARE SA"
— Nissan Altima owner, 04/01/2017
Source: NHTSA Complaints Database
Most Reported Vehicles for U1000
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | NISSAN ALTIMA | |
| 2 | NISSAN ROGUE | |
| 3 | NISSAN PATHFINDER | |
| 4 | NISSAN MURANO | |
| 5 | NISSAN XTERRA | |
| 6 | CHEVROLET EQUINOX | |
| 7 | DODGE CHARGER |
U1000 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Can I drive with this code?
Will this code clear itself?
How do I find the exact cause?
Reported Repair Costs for U1000
Based on 9 owner-reported repair costs from NHTSA complaints.
⚠️ These are owner-reported costs, not estimates. Actual costs vary by location, labor rates, and root cause. Source: NHTSA complaints database.
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Test the relevant sensor(s) with a multimeter before replacing
- 🔧 Inspect wiring harness and connectors for damage, corrosion, or loose connections
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.