PowertrainP11FC

Caution

Severity: Caution - get it checked when you can

NO. 509 battery voltage sampling wire loop fault

8 brands affected · Description from BYD data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

Safety: This code relates to the charging system. The battery may go flat and the car may stall.

1What it means in plain English

The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.

2Common causes

Sensor or actuator fault
Wiring or connector fault
Vacuum or intake leak
Fuel or ignition problem
Control module fault

3Can I drive?

Caution · drive with care

The electrical system may fail and the battery may go flat, risking a stall. If the battery or charging warning light is on, drive straight to a workshop.

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 8

Brand	Code	Description	System
BYD	P11FC	NO. 509 battery voltage sampling wire loop fault Brand	Powertrain
Daewoo	P11FC	No description available	Powertrain
EOBD	P11FC	Syre låg referenskrets Brand	Powertrain
GM	P11FC	No description available	Powertrain
Holden	P11FC	O2 Low Reference Circuit Brand	Powertrain
Opel	P11FC	No description available	Powertrain
Peugeot	P11FC	No description available	Powertrain
Saab	P11FC	No description available	Powertrain

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.

5Extended variant codes 2

These 7-character codes are manufacturer-specific variants of P11FC and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P11FC00	Ladelufttemperatursensor (T2) - Elektrischer Fehler Low Brand	Powertrain
Sprinter	P11FC00	Ladelufttemperatursensor (T2) - Elektrischer Fehler Low Brand	Powertrain

6Related codes

Browse Pxxx codes or P11Fxx codes.