AutoCodes – Generic – P183D

P183D Code - Internal Mode Switch 2 D2 Circuit High Voltage

Quick Answer

The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch assembly, contains two sliding hall-effect switch assemblies attached to the control valve body within the transmission. Common causes include Faulty Manual Shift Shaft Position Switch Assembly, Manual Shift Shaft Position Switch Assembly harness is open or shorted, Manual Shift Shaft Position Switch Assembly 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: P183D indicates Internal Mode Switch 2 D2 Circuit High Voltage.
Common causes: Common causes include Faulty Manual Shift Shaft Position Switch Assembly, Manual Shift Shaft Position Switch Assembly harness is open or shorted, Manual Shift Shaft Position Switch Assembly 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 3,664

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 Jan 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P183D Description

The automatic transmission manual shift shaft position switch assembly, also called the internal mode switch assembly, contains two sliding hall-effect switch assemblies attached to the control valve body within the transmission. The 9 outputs from the switches indicate which position is selected by the transmission manual shaft. Four outputs (A, B, C, P) are range selection inputs to the transmission control module (TCM). Five outputs (R1, R2, D1, D2, S) are direction selection inputs to the hybrid powertrain control module. The Range input signals are represented as TCM scan tool parameters, Internal Mode Switch A, B, C, and P. The Direction input signals are represented as hybrid powertrain control module scan tool parameters, Internal Mode Switch 2 - R1, R2, D1, D2, and S. The input voltage at the modules is high when a switch is open and low when a switch is closed to earth. Each control module independently supplies power and earth to its respective switch assembly.
The hybrid powertrain control module is internal to the power inverter module, often referred to as the drive motor generator power inverter module and is not serviced separately.

OBDII Code P183D - Internal Mode Switch 2 D2 Circuit High Voltage - AutoCodes.com — P183D Code - Internal Mode Switch 2 D2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P183D?

Faulty Manual Shift Shaft Position Switch Assembly
Manual Shift Shaft Position Switch Assembly harness is open or shorted
Manual Shift Shaft Position Switch Assembly circuit poor electrical connection

How to Fix the DTC P183D?

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 P183D 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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Information for Specific Makes

P183D Buick — Internal Mode Switch 2 D2 Circuit High Voltage
P183D Cadillac — Internal Mode Switch 2 D2 Circuit High Voltage
P183D Chevrolet — Internal Mode Switch 2 D2 Circuit High Voltage
P183D GMC — Internal Mode Switch 2 D2 Circuit High Voltage
P183D Infiniti — Side G Sensor
P183D Mitsubishi — Shift Fork 2 Malfunction
P183D Nissan — Side G Sensor

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.

Frequently Asked Questions about P183D Code

1. What are the common symptoms of OBDII code P183D - Internal Mode Switch 2 D2 Circuit High Voltage?

- Common symptoms include issues with shifting gears, transmission slipping, poor acceleration, and illuminated warning lights on the dashboard.

2. What can cause the OBDII code P183D to trigger?

- The code P183D can be triggered by a fault in the internal mode switch 2 D2 circuit, high voltage in the circuit, or a malfunction in the transmission control module.

3. How serious is the OBDII code P183D - Internal Mode Switch 2 D2 Circuit High Voltage?

- This code can lead to potential transmission issues and should be addressed promptly to prevent further damage to the vehicle's transmission system.

4. How can I diagnose the OBDII code P183D?

- Diagnosis typically involves using a scan tool to read the code, conducting a visual inspection of the transmission wiring and connectors, and performing circuit testing to pinpoint the issue.

5. Can I continue driving with the OBDII code P183D present?

- It is not recommended to continue driving with this code present, as it can lead to transmission problems and potentially cause further damage to the vehicle.

6. What are some repair tips for resolving the OBDII code P183D?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the internal mode switch if necessary, and resetting the fault code after repairs are completed.

7. How much does it typically cost to repair the OBDII code P183D?

- The cost of repair can vary depending on the extent of the issue, parts needed for replacement, and labor charges. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can I reset the OBDII code P183D myself?

- If you have the necessary tools and knowledge, you can attempt to reset the code yourself after addressing the underlying issue. However, it is recommended to seek assistance from a qualified mechanic for proper diagnosis and repair.

9. Is the OBDII code P183D specific to certain vehicle makes and models?

- The OBDII code P183D can be specific to certain vehicle makes and models, particularly those equipped with OBDII systems and automatic transmissions.

10. How can I prevent the OBDII code P183D from recurring in the future?

- Regular maintenance of the transmission system, checking for any signs of wiring damage, and addressing any related issues promptly can help prevent the OBDII code P183D from recurring.