PowertrainP1D86

Caution

Severity: Caution - get it checked when you can

Not working as expected

6 brands affected · Description from DFFS data.

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

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

Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.

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 6

Brand	Code	Description	System
DFFS	P1D86	Not working as expected Brand	Powertrain
EOBD	P1D86	HTM002 styrkrets Brand	Powertrain
Honda	P1D86	No description available	Powertrain
Proton	P1D86	No description available	Powertrain
MG (SAIC)	P1D86	DCDC 2.5V Power Supply Abnormal Brand	Powertrain
Subaru	P1D86	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 P1D86 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P1D8601	Cell temperature sensor short circuit warning Brand	Powertrain

6Related codes

Browse Pxxx codes or P1D8xx codes.