U1001 on Nissan
On Nissan vehicles, U1001 is a CAN network communication code, stored when control units cannot communicate over the CAN lines
Severity: Inspect soon
Owners with this code report engine stalls, no-restart and power loss, and Nissan has a bulletin for a 2017 Armada with the MIL on, so it needs a prompt check.
It gets more serious if:
- Stop: Stop if the engine stalls, loses power or will not restart: pull over safely and arrange a tow.
This page covers only what differs on Nissan. For what U1001 means, the ranked causes and the test order, see the U1001 guide.
What's different on Nissan
NissanYour car
2006–2017 · Armada
Supported by vehicle dataNissan replaces the IPDM on the 2017 truck with P0090 and U1001; a 2006 owner saw U1000 and U1001 with ECM and ABS.
2002 · Altima
Supported by vehicle dataAn owner had only U1000 and U1001 stored while the dealer wanted to replace the IPDM.
2004 · Sentra
Supported by vehicle dataAn owner read U1001 as CAN communication line after charging system trouble.
2007 · Pathfinder
Supported by vehicle dataAn owner had a stall and no-restart with U1000 and U1001.
NTB17-020Status unverified
MIL on with P0090 and U1000 and/or U1001 stored
2017armada · issued · NHTSA 10119192
Replace the IPDM when P0090 is set with those U-codes in other units. Only the NHTSA summary was read.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
NTB10066AStatus unverified
Service information on communication codes U1000, U1001, U1002 and U1010
2005–2015350z, 370z, altima, armada, cube, frontier · issued · NHTSA 10192394
Diagnose communication codes first using the CAN diagram or CAN diag support monitor. Only the NHTSA summary was read.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Nissan NTB17-020 (NHTSA 10119192): 2017 Armada MIL on with P0090 and U1000 and/or U1001
- NHTSA complaint ODI 10915486: 2006 Nissan Armada
- NHTSA complaint ODI 10241774: 2002 Nissan Altima
- NHTSA complaint ODI 10905168: 2004 Nissan Sentra
- NHTSA complaint ODI 10583698: 2007 Nissan Pathfinder
- 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