Fault code lookup

NetworkU023D

Serious

Severity: Serious - have it checked soon

Lost communication with front distance range sensor - left

17 brands affected · Description from Toyota data.

Key terms: Control module: a small computer that runs one part of the car

1What it means in plain English

Control modules in the car cannot communicate with each other over the vehicle network.

2Common causes

  1. Wiring or connector fault on the communication bus
  2. Faulty control module
  3. Low battery voltage or poor ground
  4. Water ingress in a connector or module
  5. Aftermarket device interfering with the bus

3Can I drive?

Serious · drive with care

The car may run normally or may not run at all. If the module that has lost communication controls steering, brakes, park brake, charging or engine cooling, drive only if those systems feel normal; stop safely if the steering becomes heavy, a brake warning appears, or the engine temperature climbs. If the car will not start or runs badly, have it towed.

This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.

4Brand data 17

BrandCodeDescriptionSystem
Ashok Leyland CVU023DNo description available Network
BAIC MotorU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
BYDU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
CheryU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
DFFSU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
DFFXU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
DFXKU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
EOBDU023DKaotatud side eesmise vahemikuanduriga - vasak BrandNetwork
GeelyU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
GMU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
Great WallU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
HafeiU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
HyundaiU023DNo description available Network
PeugeotU023DNo description available Network
SaabU023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
MG (SAIC)U023DLost Communication With Cruise Control Front Distance Range Sensor BrandNetwork
ToyotaU023DLost communication with front distance range sensor - left BrandNetwork

Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.

5Related codes

Browse Uxxx codes or U023xx codes.

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