AutoCodes – Chevrolet – P1822 Chevrolet

P1822 Chevrolet Code - Internal Mode Switch Circuit 'B' Low

Quick Answer

With the engine runtime over 5 seconds, system voltage from 8-18v, Fuel Cutoff inactive, engine torque from 30-148 ft-lb (40-200 Nm), the Powertrain Control Module (PCM) detects that the Internal Mode Switch (IMS) signal indicated PARK for 2 seconds, and then the IMS indicated a transitional state between D2 and D1, conditions met for 5 seconds. Common causes include Faulty Internal Mode Switch (IMS), Internal Mode Switch (IMS) harness is open or shorted, Internal Mode Switch (IMS) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1822 Chevrolet indicates Internal Mode Switch Circuit 'B' Low.
Common causes: Common causes include Faulty Internal Mode Switch (IMS), Internal Mode Switch (IMS) harness is open or shorted, Internal Mode Switch (IMS) circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,217

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 21, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1822 Chevrolet Description

OBDII Code P1822 Chevrolet - Internal Mode Switch Circuit 'B' Low - AutoCodes.com — P1822 Chevrolet Code - Internal Mode Switch Circuit 'B' Low

What does this mean?

What are the Possible Causes of the DTC P1822 Chevrolet?

Faulty Internal Mode Switch (IMS)
Internal Mode Switch (IMS) harness is open or shorted
Internal Mode Switch (IMS) circuit poor electrical connection

How to Fix the DTC P1822 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1822 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.