U1000 on Infiniti: How to Diagnose & Fix
Manufacturer-Specific Network/Communication Fault (Ford SCP/CAN)
2 Infiniti models · 2 documented issues · 1 critical · $200-$1,800 repair
U1000 on Infiniti by model: symptoms, diagnosis and fix
Owners of the redesigned QX60 have reported dead batteries, repeated jump-starts, and no-start conditions after the vehicle sits overnight or for a few days. Complaints and forum reports point to parasitic draw from modules that do not go to sleep properly, including telematics and infotainment-related systems, rather than a simple worn battery in many low-mileage cases. The problem is especially frustrating because battery replacement alone may not permanently fix it.
Common Symptoms
- Dead battery after sitting overnight or a few days
- Repeated need for jump-starts
- No crank or clicking on startup
- Battery replaced but problem returns
How to Fix
Perform a proper parasitic draw test after all modules should be asleep, then isolate the circuit causing excess current draw. Check for TSB/software updates for telematics/AV modules, test battery health, and inspect charging system output; some vehicles need module reprogramming, while others require battery replacement after repeated deep discharge damage. Document draw readings before replacing parts.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Duralast Platinum Group 48/H6 AGM batteryOEMAutoZone 319460 / H6-AGM
Confirmed failed-battery replacement branch Fitment/availability: H6-AGM, Group 48, 760 CCA, 120-minute reserve, top-right positive; AutoZone lists it as vehicle-specific for 2022 QX60 and supporting catalogs show the H6 envelope for 202…
- NOCO GENIUS2 2-amp smart charger and maintainerOEMNOCO GENIUS2 / AutoZone 606158
Optional interim or long-storage maintenance branch Fitment/availability: GENIUS2 supports 12V flooded, EFB and AGM maintenance modes. Select the installed chemistry and connect at the QX60-approved points using the exact manual precauti…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipIf the vehicle sits often, a smart maintainer can prevent deep discharge while the root cause is being diagnosed.
Sources for this issue (1)
Infiniti/Nissan vehicles using the electronic steering column lock system have a well-documented failure mode where the vehicle will not recognize the lock state, leaving the car unable to start even though the battery and key fob appear normal. The issue is widely discussed across Nissan/Infiniti owner communities and tied to the steering lock control unit used on related FM-platform vehicles. Owners typically report a sudden no-start with the steering wheel locked or the ignition staying in ACC/ON behavior without cranking.
Common Symptoms
- push-button start does nothing
- vehicle stuck in ACC or ON mode
- steering remains locked
- intelligent key warning
- intermittent no-start that becomes permanent
How to Fix
Confirm battery voltage and key fob operation first, then scan BCM/IPDM/steering lock modules for communication or lock-status faults. Repair usually involves replacing or bypassing the failed electronic steering lock assembly depending on model applicability and local repair practice, followed by key/immobilizer relearn if required. Because symptoms mimic a weak battery or bad brake switch, proper diagnosis is important before replacing parts.
Owner tips & cautions
- TipBefore condemning the steering lock, verify the 12V battery is fully charged and load-tested; low voltage can trigger misleading intelligent-key and lock errors.
- TipIf the vehicle intermittently fails to start, scan BCM and immobilizer modules immediately while the fault is active; stored history can disappear after battery disconnects.
Sources for this issue (1)
U1000 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U1000 mean on a Infiniti?
U1000 stands for "Manufacturer-Specific Network/Communication Fault (Ford SCP/CAN)." U1000 is a manufacturer-specific network communication code (most commonly seen on Ford/Mazda as an SCP/J1850 or CAN data-bus fault) indicating that one control module is not receiving valid or expected data from another module over the vehicle's communication network. It is typically a symptom rather than the root problem, pointing to a break in module-to-module messaging. The specific implicated module and bus depend on the manufacturer, so a capable scan tool is needed to trace which network or module is failing. On Infiniti it is documented across 2 models: QX60, QX50.
What are the most common causes of U1000?
The most common causes of U1000 are: Damaged or corroded network (CAN/SCP) wiring or connectors, Loss of power or ground to a control module, Failed or internally faulty control module on the bus, Poor connections at the data link connector, Water intrusion / corrosion in a module or harness, Software/configuration mismatch after module replacement. The specific cause varies by vehicle.
How much does it cost to fix U1000 on a Infiniti?
Published repair estimates on Infiniti range from $200 to $1,800 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for U1000 on a different make?
View U1000 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.