PowertrainP0900

Caution

Severity: Caution - get it checked when you can

Clutch A Actuator Control Circuit/Open

30 brands affected · Generic SAE J2012 description.

Key terms: SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions

1What it means in plain English

This range normally covers the transmission control system, but some manufacturers use P07-P09 codes for unrelated functions (fuel pump control, air-mix motors, lighting or windows). Check the description before assuming it is a transmission fault.

2Common causes

Low or dirty transmission fluid
Faulty shift solenoid
Faulty speed sensor
Wiring or connector fault
Internal transmission wear

3Can I drive?

Caution · drive with care

If the transmission slips, jerks, will not shift, or a transmission temperature warning is on, stop driving and let it cool: continuing can cause expensive damage. If the code names a different system (for example the fuel pump), treat it on its own terms; a fuel-pump control failure can stall the car, so have it checked before driving further. Otherwise drive gently 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 30

Brand	Code	Description	System
Ashok Leyland CV	P0900	Clutch A Actuator Control Circuit/Open SAE	Powertrain
BAIC Motor	P0900	EDS3 (clutch) OC Brand	Powertrain
Mercedes-Benz	P0900	Clutch A Actuator Control Circuit/Open SAE	Powertrain
BYD	P0900	EDS3 (clutch) OC Brand	Powertrain
Chery	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
Daewoo	P0900	DTC P0805 and Brand	Powertrain
DFFS	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
DFFX	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
DFXK	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
EOBD	P0900	Klaht 'A' ajuri juhtimisahel madal Brand	Powertrain
Geely	P0900	EDS3 (Clutch) Open Circuit Brand	Powertrain
GM	P0900	DTC P0805 and Brand	Powertrain
Great Wall	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
Hafei	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
Holden	P0900	Clutch Solenoid Valve Brand	Powertrain
Honda	P0900	Clutch A Actuator Control Circuit/Open SAE	Powertrain
Hyundai	P0900	Clutch A Actuator Control Circuit/Open SAE	Powertrain
Isuzu	P0900	Clutch A Actuator Control Circuit/Open SAE	Powertrain
Land Rover	P0900	Check for DTC, P0902, P0903 Brand	Powertrain
Mitsubishi	P0900	Clutch motor circuit open Brand	Powertrain
Opel	P0900	DTC P0805 And Check Brand	Powertrain
Peugeot	P0900	DTC P0805 And Check Brand	Powertrain
Proton	P0900	Clutch motor circuit open Brand	Powertrain
Saab	P0900	DTC P0805 And Check Brand	Powertrain
MG (SAIC)	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
Smart	P0900	Clutch A Actuator Control Circuit/Open SAE	Powertrain
Suzuki	P0900	Clutch “A' Actuator Control – Circuit Resistance Below Threshold Brand	Powertrain
Tata	P0900	Clutch Actuator Circuit/Open Brand	Powertrain
Toyota	P0900	Antenna 1 input fault (left rear view) Brand	Powertrain
Volkswagen	P0900	SAE: Clutch Actuator Circuit 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 4

These 7-character codes are manufacturer-specific variants of P0900 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P090018	dog clutch unintended opening Brand	Powertrain
Mercedes-Benz	P090019	dog clutch unintended closing Brand	Powertrain
Mercedes-Benz	P090054	dog clutch position adaptation values invalid Brand	Powertrain
Mercedes-Benz	P090074	Dog clutch pulse back. Brand	Powertrain

6Related codes

Browse Pxxx codes or P090xx codes.