U1403 on Chrysler

On Chrysler vehicles, U1403 means the fuel level signal received over the network is implausible

Severity: Severity not verified — if the car runs badly, have it inspected

The sources describe a fuel gauge and warning light problem, but none states how safe the vehicle is to drive, so we have not assigned a class.

Source: how we rate severity

This page covers only what differs on Chrysler. For what U1403 means, the ranked causes and the test order, see the U1403 guide.

What's different on Chrysler

Chrysler

2007 · Pacifica
Supported by vehicle data
A 2007 owner reports the gauge dropping to zero with U1403 and a repeat after fuel pump replacement.
2008 · Sebring
Supported by vehicle data
A 2008 owner read U1403 as an implausible fuel level signal after cluster lights flashed and the car would not take a jump.

Sources and review

NHTSA complaint ODI 11003841: 2007 Chrysler Pacifica — NHTSA (owner complaint)
NHTSA complaint ODI 11526510: 2008 Chrysler Sebring — NHTSA (owner complaint)

Last reviewed: October 16, 2026
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