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U1000 NISSAN

U1000 NISSAN - CAN Communication Line - Signal Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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U1000 NISSAN Possible Causes

  • Controller Area Network (CAN) communication harness is open or shorted
  • Faulty Engine Control Module (ECM)
  • Poor harness ground connection.
  What does this mean?

First diagnose U1000 NISSAN code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

U1000 NISSAN Tech Notes

Usually, the problem is poor harness ground connection.

There is a service bulletin for the following Nissan models with U1000 code:
- 2002-2006 Nissan Maxima
- 2004-2006 Nissan Titan
- 2004-2006 Nissan Armada
- 2002-2006 Nissan Sentra
- 2005-2006 Nissan Frontier
- 2002-2006 Nissan Altima
- 2005-2006 Nissan Xterra
- 2005-2006 Nissan Pathfinder
- 2004-2006 Nissan Quest
- 2003-2006 Nissan 350Z
- 2003-2006 Nissan Murano
Nissan Factory Service Bulletin Code U1000

Service bulletin suggests cleaning engine and body harness ground connection to repair the problem.
- Clean/re-tighten ECM ground connections.
- Clean/re-tighten negative battery cable body connection and battery post connection.
- If needed, clean and ensure good contact between the steering member assembly and the left side instrument stay assembly.
  What does this mean?

Cost of diagnosing the U1000 NISSAN code

    Labor: 1.0

    The cost of diagnosing the U1000 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

When is the U1000 NISSAN code detected?

When ECM is not transmitting or receiving CAN communication signal of OBD (emission related diagnosis) for 2 seconds or more.

U1000 NISSAN Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U1000 Nissan Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
OBDII Code U1000 Nissan - CAN Communication Line - Signal Malfunction - AutoCodes.com

U1000 NISSAN More Information

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U1000 Nissan Information for specific Nissan models

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Related Information

U1000 NISSAN Comments

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