U3003 on Ford
Manufacturer code: on Ford, Lincoln, Mazda and Honda, the module that stored it saw its battery supply voltage outside the allowed range, usually too low
Severity: Inspect soon
Ford stores U3003 in the ABS and power steering modules with brake warnings and heavy steering, and Honda in the brake booster, so get the battery and charging system checked soon.
It gets more serious if:
- Stop: Stop in a safe place if steering assist is lost, the brake pedal goes hard or sinks, or the car shows a Check Brake System or Do not drive message.
This page covers only what differs on Ford. For what U3003 means, the ranked causes and the test order, see the U3003 guide.
What's different on Ford
FordYour car
2015–2023 · F-150
Supported by vehicle dataU3003 shows in the running board module (SSM 50154), steering module after auto start-stop (SSM 49662) and ABS module on 2023 trucks (SSM 52062), all tied to low battery charge. Whether they are still current is not verified.
2020–2022 · F-250 Super Duty
Supported by vehicle dataFord TSB 22-2044: water in the battery junction box with C0020 and U3003 in ABS. Whether it is still current is not verified.
2019 · Transit Connect
Supported by vehicle dataFord SSM 47792: lack of steering assist with U3003; charge the battery and reprogram or replace the steering module. Whether it is still current is not verified.
SSM 46076Status unverified
P0137 and U3003 from low battery voltage
2016–2017fusion, c-max · issued · NHTSA 10109069
Test the battery, repair low voltage and clear codes. Also covers Lincoln MKZ.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 50154Status unverified
Power running boards disabled with U3003:16
2015–2020f-150, expedition, f-250-super-duty · issued · NHTSA 10201606
Inspect the charging system and correct the low-voltage event, then reset the boards to Auto. Also covers Lincoln Navigator.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 52062Status unverified
Check Brake System with U3003:16 in ABS
2023f-150 · issued · NHTSA 10245259
Caused by low battery state of charge.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 52201Status unverified
12V battery low with U3003:62 in the DC/DC converter
2020–2023escape, maverick · issued · NHTSA 10249424
Caused by an open 300 A high-current fuse. Also covers Lincoln Corsair.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 47792Status unverified
Lack of steering assist with U3003 and U2011
2019transit-connect · issued · NHTSA 10155564
Charge the battery, then reprogram or replace the steering module.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 49662Status unverified
Heavy steering with U3003:68 after auto start-stop
2018f-150 · issued · NHTSA 10189562
Check battery health and reprogram the steering module.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 22-2044Status unverified
Water in the battery junction box with C0020 and U3003
2020–2022f-250-super-duty, f-350-super-duty, f-450-super-duty, f-550-super-duty · issued · NHTSA 10208141
Inspect and repair the battery junction box and its cover.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Ford SSM 50154: power running boards disabled with U3003:16 in the running board module
- Ford SSM 49662: heavy steering with U3003:68 after auto start-stop (2018 F-150)
- Ford SSM 52062: Check Brake System message with U3003:16 in the ABS module (2023 F-150)
- Ford TSB 22-2044: water in the battery junction box, ABS lamp with C0020 and U3003 (2020-2022 Super Duty)
- Ford SSM 47792: lack of power steering assist with U3003 and U2011 (2019 Transit Connect)
- NHTSA complaint 11766302: 2019 Honda CR-V brake warnings with U3003-16
- 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