PowertrainP1635

Caution

Severity: Caution - get it checked when you can

Stop learning during first initialisation aborted

31 brands affected · Description from BMW 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 31

Brand	Code	Description	System
Ashok Leyland CV	P1635	No description available	Powertrain
BAIC Motor	P1635	5V supply circuit 1 too high Brand	Powertrain
BMW	P1635	Stop learning during first initialisation aborted Brand	Powertrain
BYD	P1635	Actuator valve 3 circuit fault Brand	Powertrain
Chery	P1635	Powertrain Data Bus: Missing Message from A/C Controller Brand	Powertrain
Daewoo	P1635	5V Ref Brand	Powertrain
Daihatsu	P1635	No description available	Powertrain
DFFS	P1635	Vacuum pump relay control failure Brand	Powertrain
DFXK	P1635	ECU temperature physical value 1 below lower limit Brand	Powertrain
EOBD	P1635	Jenis ban Brand	Powertrain
Ford	P1635	Diagnostic Trouble Code (DTC) - And/Or P1639 Present After Powertrain Control Module (PCM) Or Instrument Cluster Replacement - Gasoline Engine Vehicles Only Brand	Powertrain
Geely	P1635	Powertrain Data Bus: Missing Message from A/C Controller Brand	Powertrain
GM	P1635	No description available	Powertrain
Great Wall	P1635	ECU temperature sensor signal low Brand	Powertrain
Hafei	P1635	No description available	Powertrain
Holden	P1635	No description available	Powertrain
Honda	P1635	No description available	Powertrain
Hyundai	P1635	No description available	Powertrain
Isuzu	P1635	No description available	Powertrain
Land Rover	P1635	Tire/axle out of acceptable range Brand	Powertrain
Mahindra	P1635	No description available	Powertrain
Mazda	P1635	Diagnostic Trouble Code (DTC) - And/Or P1639 Present After Powertrain Control Module (PCM) Or Instrument Cluster Replacement - Gasoline Engine Vehicles Only Brand	Powertrain
Mitsubishi	P1635	No description available	Powertrain
Perodua	P1635	No description available	Powertrain
Peugeot	P1635	No description available	Powertrain
Porsche	P1635	CAN-Schnittstelle: Timeout Hecksteuergerät Brand	Powertrain
Proton	P1635	No description available	Powertrain
Saab	P1635	5V Ref Brand	Powertrain
Suzuki	P1635	Sensor Supply Crt 2 Fail Brand	Powertrain
Tata	P1635	No description available	Powertrain
Toyota	P1635	Vacuum pump relay control failure 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.

5Extended variant codes 1

These 7-character codes are manufacturer-specific variants of P1635 and may be reported by some scan tools.

Brand	Code	Description	System
SsangYong	P163500	No immbilizer response. indicates a general BCM/PASEM or CAN communication problem between ECU and BCM/PASEM Brand	Powertrain

6Related codes

Browse Pxxx codes or P163xx codes.