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P1853

Brake Band Apply Solenoid High Voltage.

  • GM
  • Powertrain
  • Manufacturer code
  • Medium severity

How this code is built

P
SystemPowertrain
1
Defined byThe manufacturer
8
AreaTransmission
53
FaultThe specific fault in that area

What it means

On GM vehicles P1853 means the transmission control module has seen a high voltage on the brake band apply solenoid circuit. The module monitors the circuit when it commands the solenoid and the voltage was higher than expected, which points to an open circuit, a poor connection or a fault in the solenoid or the module driver. Which transmissions use this solenoid depends on the model and year, so check the correct wiring information.

Symptoms

  • Transmission warning light or check engine light on
  • Transmission stuck in one gear or limp mode
  • Harsh, delayed or missing gear changes
  • Loss of engine braking or a missing gear range
  • Slipping or flaring between gears

Possible causes

  • Damaged wiring or poor connection in the solenoid circuit, such as an open circuit, corroded or loose terminalslikely
  • Faulty brake band apply solenoid with an open or high resistance coillikely
  • Damaged internal transmission wiring harness or connector, often where it passes through the casepossible
  • Fluid contamination or low fluid level affecting the solenoid and connectorpossible
  • Low battery or charging system voltage causing high or unstable voltage readingspossible
  • Faulty transmission control module or its output driverrare

How to diagnose

  1. Read all stored codes and freeze frame data, noting any other transmission or power supply codes
  2. Check battery condition and charging voltage, as poor supply can upset solenoid monitoring
  3. Check the transmission fluid level and condition, looking for burnt smell, debris or contamination
  4. Inspect the external transmission connector and wiring for damage, chafing, corrosion, bent pins or fluid ingress
  5. Check the solenoid circuit for continuity, short circuits and voltage supply against the wiring diagram for the model
  6. Measure the solenoid coil resistance and compare it with the specification for that transmission
  7. Check the internal harness and connector, which on many designs means dropping the pan or following model-specific procedures
  8. Command the solenoid on and off with a suitable scan tool function, if supported, and watch the circuit response

How to fix

  • Repair or replace damaged wiring, and clean or replace corroded terminals and connectors
  • Replace the brake band apply solenoid if its resistance or operation is out of specification
  • Replace the internal wiring harness or connector if it is damaged or leaking fluid
  • Correct the fluid level, and service or replace the fluid and filter if it is contaminated
  • Repair the battery or charging fault if the supply voltage is out of range
  • Replace or repair the transmission control module only after the wiring and solenoid are proved good

Can I keep driving?

Medium severity

The car can usually be driven carefully for a short time, but the transmission may be in limp mode with reduced gears. Have it fixed soon to avoid further wear or damage from slipping or harsh shifts.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.

This code for other makes

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