PowertrainP1D4A

Caution

Severity: Caution - get it checked when you can

Brake pedal circuit fault

13 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 braking system. Have braking checked promptly.

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 braking system may be affected. Have it checked promptly; if the pedal feels abnormal, the car pulls when braking, or a brake warning light is on, stop safely.

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 13

Brand	Code	Description	System
BYD	P1D4A	Brake pedal circuit fault Brand	Powertrain
Daewoo	P1D4A	No description available	Powertrain
EOBD	P1D4A	Intern styrmodul efterinsprutning 3 effektivitet fel Brand	Powertrain
GM	P1D4A	No description available	Powertrain
Holden	P1D4A	14V Power Module Output Circuit Open Brand	Powertrain
Honda	P1D4A	No description available	Powertrain
Maserati	P1D4A	Internal Control Module Post Injection 3 Efficiency Error Brand	Powertrain
Opel	P1D4A	No description available	Powertrain
Peugeot	P1D4A	No description available	Powertrain
Proton	P1D4A	No description available	Powertrain
Saab	P1D4A	No description available	Powertrain
MG (SAIC)	P1D4A	validation of ULv Brand	Powertrain
Tata	P1D4A	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 1

These 7-character codes are manufacturer-specific variants of P1D4A and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P1D4A00	Die globale Variantencodierung ist unvollständig. Brand	Powertrain

6Related codes

Browse Pxxx codes or P1D4xx codes.