OBD Guide

P182F

Internal Mode Switch 'C' Circuit High Voltage

P182F is an OBD-II diagnostic trouble code meaning: Internal Mode Switch 'C' Circuit High Voltage. Common causes: short circuit to positive, malfunction of the internal mode switch. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Incorrect display of the current transmission mode on the instrument panel
  • The gearbox goes into emergency mode
  • Gear shifting problems
  • Check Engine light comes on
  • The car may not start in some modes

Causes

  • Short circuit to positive
  • Malfunction of the internal mode switch
  • Wiring harness damage
  • Problems with contacts in connectors
  • Transmission control module (TCM) malfunction

How to Fix

  1. Check the integrity of the wiring and connectors of the mode switch circuit
  2. Measure resistance and voltage at the mode switch
  3. Check for short circuit in the circuit
  4. If necessary, replace the internal mode switch
  5. Check and, if necessary, reflash or replace the TCM

Related codes

FAQ

What does the P182F code mean?

P182F is an OBD-II diagnostic trouble code that indicates: Internal Mode Switch 'C' Circuit High Voltage

What causes a P182F error code?

The most common causes of P182F include: Short circuit to positive; Malfunction of the internal mode switch; Wiring harness damage; Problems with contacts in connectors.

How do I fix a P182F diagnostic trouble code?

To fix P182F: Check the integrity of the wiring and connectors of the mode switch circuit. Measure resistance and voltage at the mode switch. Check for short circuit in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P182F?

Limited driving only, diagnose soon

How much does it cost to fix P182F?

The estimated repair cost for P182F is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat