PowertrainP0791

Caution

Severity: Caution - get it checked when you can

Intermediate Shaft Speed Sensor A Circuit

27 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 27

Brand	Code	Description	System
Ashok Leyland CV	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
BAIC Motor	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
BMW	P0791	Intermediate Shaft Speed Sensor Circuit Brand	Powertrain
BYD	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
Chery	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
Chrysler	P0791	Intermediate Shaft Speed Sensor Circuit Brand	Powertrain
Daewoo	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
DFFS	P0791	Retract switch stuck Brand	Powertrain
DFFX	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
DFXK	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
EOBD	P0791	Ara mil hız sensörü 'A' devresi Brand	Powertrain
Geely	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
GM	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
Great Wall	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
Hafei	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
Hyundai	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
Isuzu	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
Land Rover	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
Mitsubishi	P0791	Secondary speed sensor Brand	Powertrain
Nissan	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
Peugeot	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
Proton	P0791	Secondary speed sensor Brand	Powertrain
Saab	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
MG (SAIC)	P0791	Intermediate Shaft Speed Sensor A Circuit Brand	Powertrain
Subaru	P0791	Intermediate Shaft Speed Sensor A Circuit SAE	Powertrain
Tata	P0791	Intermediate Shaft Speed Sensor 'A' Circuit Brand	Powertrain
Toyota	P0791	Retract switch stuck (steering column) 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 9

These 7-character codes are manufacturer-specific variants of P0791 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P079100	Speed sensor odd disturbed Brand	Powertrain
Mercedes-Benz	P079101	Der Drehzahlsensor 1 hat einen elektrischen Fehler. Es liegt ein allgemeiner elektrischer Fehler vor. Brand	Powertrain
Mercedes-Benz	P079112	Rpm sensor 1 has an electrical fault. There is a short circuit to positive. Brand	Powertrain
Mercedes-Benz	P079118	Dog Clutch Speed- IF fault Brand	Powertrain
Mercedes-Benz	P07911C	overspeed internal Brand	Powertrain
Sprinter	P07911C	No description available	Powertrain
Mercedes-Benz	P079136	Dog Clutch Position Sensor Frequency out of range low Brand	Powertrain
Mercedes-Benz	P079137	Dog Clutch Position Sensor Frequency out of range high Brand	Powertrain
Mercedes-Benz	P079138	Dog clutch speed sensor signal plausibility Brand	Powertrain

6Related codes

Browse Pxxx codes or P079xx codes.