OBD Guide

P1845

2-3 Shift Solenoid Circuit Low Input Voltage

P1845 is an OBD-II diagnostic trouble code meaning: 2-3 Shift Solenoid Circuit Low Input Voltage. Common causes: shift solenoid 2-3 malfunction, open or short circuit in solenoid circuit. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Incorrect gear shifting (especially from 2 to 3)
  • Transmission of the gearbox into emergency mode
  • Check Engine Light Illuminates
  • Jerks when shifting gears
  • Reduced vehicle dynamics

Causes

  • Shift Solenoid 2-3 Malfunction
  • Open or short circuit in solenoid circuit
  • Poor contact in connectors
  • Transmission control module (TCM) malfunction
  • Solenoid Circuit Power Problems

How to Fix

  1. Check the solenoid resistance (compare with the norm)
  2. Inspect wiring and connectors for damage
  3. Check the supply voltage of the solenoid circuit
  4. If necessary, replace shift solenoid 2-3
  5. Reset error and test drive

Related codes

Error P1845 by Vehicle Brand

FAQ

What does the P1845 code mean?

P1845 is an OBD-II diagnostic trouble code that indicates: 2-3 Shift Solenoid Circuit Low Input Voltage

What causes a P1845 error code?

The most common causes of P1845 include: Shift Solenoid 2-3 Malfunction; Open or short circuit in solenoid circuit; Poor contact in connectors; Transmission control module (TCM) malfunction.

How do I fix a P1845 diagnostic trouble code?

To fix P1845: Check the solenoid resistance (compare with the norm). Inspect wiring and connectors for damage. Check the supply voltage of the solenoid circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1845?

Limited driving only, diagnose soon

How much does it cost to fix P1845?

The estimated repair cost for P1845 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat