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U1400

Code meaning and manufacturer information

OBD-II / DTC

Reference meaning

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

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Manufacturer communications

5

Original wording in English

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AUDI

This TSB provides information when the 12V battery is discharged/drive system not activated/keyless opening is inoperatble; DTCs U101100, B1802F1, U140A00, U140000, B10CD00.

AUDI

This TSB provides information when the 12V battery is discharged/drive system not activated/keyless opening is inoperatble; DTCs U101100, B1802F1, U140A00, U140000, B10CD00.

CHRYSLER

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. A customer or technicians may be unable to read data information from the OBDII connector when using a generic scan tool (APAC).Customers may experience a Malfunction Indicator Lamp (MIL) illumination. …

1806917 ↗

CHRYSLER

Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following DiagnosticTrouble Codes (DTCs) …

Check vehicle applicability

55

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

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MakeModelModel year
AudiA4 ↗2010
AudiA4 ↗2009
AudiA4 ALLROAD ↗2014
AudiA4 ALLROAD ↗2013
AudiA4 AVANT ↗2012
AudiA4 AVANT ↗2011
AudiA5 ↗2014
AudiA5 ↗2013

Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.