PowertrainP1946

Caution

Severity: Caution - get it checked when you can

Control module 1 for coolant fan: defective; Open circuit

9 brands affected · Description from Volkswagen data.

Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions

Safety: This code relates to engine cooling or temperature. Overheating can damage the engine.

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

Watch the temperature gauge. Stop safely and let the engine cool if the gauge climbs, steam appears, or a red warning light comes on.

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 9

Brand	Code	Description	System
BAIC Motor	P1946	Crash signal received from Sensor Diagnosis Module (SDM) by ECM Brand	Powertrain
Chery	P1946	Control Module 1 for Coolant Fan: Defective Brand	Powertrain
DFXK	P1946	Control Module 1 for Coolant Fan: Defective Brand	Powertrain
EOBD	P1946	Kjøleviftekontrollmodul 1 Brand	Powertrain
Geely	P1946	Control Module 1 for Coolant Fan: Defective Brand	Powertrain
Peugeot	P1946	No description available	Powertrain
Porsche	P1946	No description available	Powertrain
Tata	P1946	No description available	Powertrain
Volkswagen	P1946	Control module 1 for coolant fan: defective; Open 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 2

These 7-character codes are manufacturer-specific variants of P1946 and may be reported by some scan tools.

Brand	Code	Description	System
Mercedes-Benz	P194600	Fehlereintrag Hybrid System Fehler 24 Brand	Powertrain
Sprinter	P194600	Fehlereintrag Hybrid System Fehler 24 Brand	Powertrain

6Related codes

Browse Pxxx codes or P194xx codes.