Damaged wiring or corroded connector between the control module and the transmission, giving an open circuit or short to voltage; Faulty brake band apply solenoid with an open or failed internal winding; Damaged or contaminated internal transmission wiring harness or pass-through connector, often from fluid ingress; Low or contaminated transmission fluid affecting the solenoid and valve body; Faulty transmission control module driver circuit; Low battery or charging system voltage fault causing incorrect readings.

P1853

Brake Band Apply Solenoid High Voltage.

Oldsmobile
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

P1853 on an Oldsmobile means the transmission control module has detected a high voltage condition on the brake band apply solenoid circuit. The module saw a voltage on the circuit that was higher than expected for the commanded state, which points to an open circuit, a short to voltage or a failed solenoid or driver. The exact solenoid layout and which gearbox it applies to depend on the model and transmission, so check the correct information for the vehicle.

Symptoms

Gearbox warning light or check engine light on
Transmission stuck in one gear or in a limp-home mode
Harsh, delayed or missing gear changes
Flare-up or slipping between gears
No engagement or poor engine braking in certain ranges

Possible causes

Damaged wiring or corroded connector between the control module and the transmission, giving an open circuit or short to voltagelikely
Faulty brake band apply solenoid with an open or failed internal windinglikely
Damaged or contaminated internal transmission wiring harness or pass-through connector, often from fluid ingresspossible
Low or contaminated transmission fluid affecting the solenoid and valve bodypossible
Faulty transmission control module driver circuitrare
Low battery or charging system voltage fault causing incorrect readingsrare

How to diagnose

Read all stored codes and freeze frame data, noting any other transmission or power supply codes and the conditions when the fault set
Check the battery condition and charging voltage, as poor supply voltage can upset solenoid circuit readings
Check the transmission fluid level and condition, looking for burnt smell, debris or signs of contamination
Visually inspect the transmission harness and connector for chafing, corrosion, bent pins, water or fluid ingress
Using the manufacturer wiring diagram, test the solenoid circuit for continuity, short to voltage and short to earth with the connector disconnected
Measure the solenoid winding resistance and compare it with the specification for the exact transmission
Monitor the solenoid command and feedback with a scan tool while operating it, to see whether the voltage stays high
If wiring and solenoid test good, check the control module power, earth and driver output before suspecting the module

How to fix

Repair or replace damaged wiring and clean or renew corroded connectors
Replace the brake band apply solenoid, or the solenoid assembly, if its resistance or operation is out of specification
Renew the internal harness or pass-through connector if fluid ingress or damage is found
Correct the fluid level and service the transmission with the correct fluid if it is contaminated, and repair the cause
Repair any battery or charging fault, then clear the code and retest
Repair or replace the control module only after all circuit and supply faults are ruled out, following the manufacturer procedure

Can I keep driving?

Medium severity

The car can usually be driven a short distance to a workshop, but the gearbox may be in limp mode with harsh or limited shifts. Continuing to drive risks further transmission wear, so get it checked soon.

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