PowertrainP0861

Caution

Severity: Caution - get it checked when you can

Gear Shift Control Module A Communication Circuit Low

27 brands affected · Generic SAE J2012 description.

Key terms: Control module: a small computer that runs one part of the car · 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 27

Brand	Code	Description	System
Ashok Leyland CV	P0861	Hybrid Battery. Temperature Sensor. (Sensor B.) - High Signal Brand	Powertrain
BAIC Motor	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
BYD	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Chery	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Daewoo	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
DFFS	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
DFFX	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
DFXK	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
EOBD	P0861	Växlingsstyrmodul 'A' kommunikationskrets låg Brand	Powertrain
Ford	P0861	Gear Shift Control Module A Communication Circuit Low SAE	Powertrain
Geely	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
GM	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Great Wall	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Hafei	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Holden	P0861	Transmission Shift Lever Communication Circuit Low Voltage Brand	Powertrain
Hyundai	P0861	Gear Shift Control Module A Communication Circuit Low SAE	Powertrain
Isuzu	P0861	Gear Shift Control Module A Communication Circuit Low SAE	Powertrain
Land Rover	P0861	Transmission control module to powertrain control module heartbeat signal - Short circuit to ground Brand	Powertrain
Mazda	P0861	Gear Shift Control Module A Communication Circuit Low SAE	Powertrain
Opel	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Peugeot	P0861	Gear Shift Control Module A Communication Circuit Low SAE	Powertrain
Saab	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
MG (SAIC)	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Suzuki	P0861	Gear Shift Control Module 'A' Communication Circuit Low - Invalid Serial Data Received Brand	Powertrain
Tata	P0861	Gear Shift Module Communication Circuit Low Brand	Powertrain
Toyota	P0861	Gear Shift Module A Communication Circuit Low Brand	Powertrain
Volkswagen	P0861	SAE: Gear Shift Module Communication 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 P086xx codes.