Fault code lookup

PowertrainP1826

Caution

Severity: Caution - get it checked when you can

Internal Mode Switch Circuit C - High

21 brands affected · Description from GM 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

  1. Sensor or actuator fault
  2. Wiring or connector fault
  3. Vacuum or intake leak
  4. Fuel or ignition problem
  5. 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 21

BrandCodeDescriptionSystem
BAIC MotorP1826Engine RPM out of range BrandPowertrain
Mercedes-BenzP1826No description available Powertrain
CheryP1826Clutch slip too large at 6th gear BrandPowertrain
DaewooP1826Internal Mode Switch Circuit C - High BrandPowertrain
DFFSP1826Overspeed switch circuit fault BrandPowertrain
EOBDP1826Krug grijača BrandPowertrain
GMP1826Internal Mode Switch Circuit C - High BrandPowertrain
HoldenP1826Shift Fork 1-3 Position Sensor BrandPowertrain
HyundaiP1826No description available Powertrain
IsuzuP1826No description available Powertrain
Land RoverP18264-Wheel Drive Low Clutch Relay Circuit To Battery BrandPowertrain
MahindraP1826No description available Powertrain
MitsubishiP1826Shift fork POS. sensor2 high BrandPowertrain
OpelP1826Internal Mode Switch Circuit C - High BrandPowertrain
PeugeotP1826No description available Powertrain
ProtonP1826Shift fork POS. sensor2 high BrandPowertrain
SaabP1826Internal Mode Switch Circuit C - High BrandPowertrain
MG (SAIC)P1826Shiftfork 1/3 Position Sensor Signal out of Range BrandPowertrain
SmartP1826No description available Powertrain
SuzukiP1826Lost Communication With Valve Body Assembly BrandPowertrain
TataP1826No description available 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 3

These 7-character codes are manufacturer-specific variants of P1826 and may be reported by some scan tools.

BrandCodeDescriptionSystem
Mercedes-BenzP182600No description available Powertrain
SprinterP182600No description available Powertrain
SsangYongP182600Coupling overheat protection BrandPowertrain

6Related codes

Browse Pxxx codes or P182xx codes.

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