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TuningBot DTC Database · v4.37.14

P1850 Diagnostic Trouble Code (5 interpretations)

5 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.

P · PowertrainEngineOBD2
Brand pages:ChevroletFordHondaOpelVAG

Chevrolet

1 interpretation
P1850
Brake Band Apply Solenoid Circuit Chevrolet · engine Data confidence 80%

The control module detected improper operation of the Brake Band Apply Solenoid circuit. This is the manufacturer-specific definition used by Chevrolet.

Ford

1 interpretation
P1850
Transmission Transfer Case Contact Plate 'B' Circuit Failure Ford · engine Data confidence 80%

The control module detected improper operation of the Transmission Transfer Case Contact Plate 'B' circuit. This is the manufacturer-specific definition used by Ford.

Honda

1 interpretation
P1850
AT - brake band solenoid malfunction Honda · engine Data confidence 62%

The control module detected improper operation of the AT - brake band solenoid. This is the manufacturer-specific definition used by Honda.

Possible causes

AT trouble code(s) stored

Opel

1 interpretation
P1850
Shift solenoid (SS) 'C', band apply - circuit malfunction Opel · transmission Data confidence 62%

The control module detected improper operation of the Shift solenoid (SS) 'C', band apply circuit. This is the manufacturer-specific definition used by Opel.

VAG

1 interpretation
P1850
Powertrain Data Bus: Missing Message from ECU VAG · network Data confidence 80%

The control module did not receive the expected Powertrain Data Bus signal. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 18258. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

  • MIL on
  • Warning light on

Possible causes

  • Blown fuse for control module
  • Wiring Harness issue
  • Failed control module

Recommended checks

Inspect wiring and terminals for CAN BUS between control modules

Applies to Volkswagen

Related and nearby codes

P18 range
P1800P1801P1802P1803P1804P1805P1806P1807P1808P1809P1810P1811P1812P1813P1814P1815P1816P1817

How to read P1850

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

850

Specific fault index within the subsystem.

Frequently asked questions about P1850

What does P1850 mean?

Diagnostic Trouble Code (5 interpretations). The control module detected improper operation of the Brake Band Apply Solenoid circuit. This is the manufacturer-specific definition used by Chevrolet.

Is P1850 generic or manufacturer-specific?

P1850 is a manufacturer-specific code. In this database it is documented for: Chevrolet, Ford, Honda, Opel, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1850 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: Diagnostic Strategy and DTC Logic

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