PowertrainP1A42

Caution

Severity: Caution - get it checked when you can

Shift lever R lamp circuit low

10 brands affected · Description from Toyota 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 10

Brand	Code	Description	System
BYD	P1A42	Charging circuit fault Brand	Powertrain
Chery	P1A42	PTC heating system alarm Brand	Powertrain
EOBD	P1A42	Akuvooluanduri toiteahel Brand	Powertrain
Honda	P1A42	No description available	Powertrain
Land Rover	P1A42	No description available	Powertrain
Mitsubishi	P1A42	BATT. current SNS. power circuit Brand	Powertrain
Peugeot	P1A42	No description available	Powertrain
Proton	P1A42	BATT. current SNS. power circuit Brand	Powertrain
MG (SAIC)	P1A42	Min Pack V Warning Brand	Powertrain
Toyota	P1A42	Shift lever R lamp circuit low Brand	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.

5Related codes

Browse Pxxx codes or P1A4xx codes.