P2782: Downshift Switch Circuit Intermittent/Erratic

P2782 targets a downshift switch signal that flickers, bounces or vanishes for moments. No manufacturer documents P2782 publicly. The documented paddle monitors (GM's dual-clutch TCM tables of 2023/2024, Ford's TR9070 entry) cover low, high, implausible and held-too-long (P2779–P2781, P0816) without a separate dropout test, so such a fault there tends to surface under those codes. CARB's requirement to monitor transmission inputs for circuit and rationality faults is the basis for this code. A clock spring that loses contact only at certain steering angles is the classic cause, followed by a loose pin in the column connector and a minus paddle with a bouncing contact. The driver notices sporadic missed or unexpected downshifts that disappear again.

Symptoms

• Downshift occasionally missed
• Sporadic unexpected downshift request

Most likely causes

• Clock spring losing contact at certain steering angles
• Loose pin in the steering column connector
• Bouncing or worn contact in the minus paddle

What to check, in order

Start with the simplest. You can tick off each step.

1. Check the fluid level and condition according to the manufacturer
2. Gently move the wiring with the engine running and watch whether the reading changes.
3. Check the transmission connector
4. Read the data with a transmission-compatible scanner
5. Measure the solenoid valve circuit
6. Leave opening the transmission to a specialized repair shop

Good to know

• Repair difficulty: medium

What each character of P2782 means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• 7: Transmission
• 82: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2782?

Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

What causes code P2782?

The most common causes are: clock spring losing contact at certain steering angles; loose pin in the steering column connector; bouncing or worn contact in the minus paddle.

Related codes

• P2779Downshift Switch Circuit Range/Performance
• P2780Downshift Switch Circuit Low
• P2781Downshift Switch Circuit High
• P0816Downshift Switch Circuit
• P2778Upshift Switch Circuit Intermittent/Erratic

Sources

• law.cornell.edu: 13 CCR 1968.2
• gsi.ext.gm.com: 24OBDG07
• fordservicecontent.com: OBDSM2400OUTPUT 16Jul2024 WSM final V2 MCS7001

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.