AutoCodes – Generic – P1828

P1828 Code - Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure

Quick Answer

The transfer case is equipped with an electromagnetic clutch which is located inside the case. Common causes include Faulty Generic Electronic Module (GEM), Generic Electronic Module (GEM) harness is open or shorted, Generic Electronic Module (GEM) 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: P1828 indicates Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure.
Common causes: Common causes include Faulty Generic Electronic Module (GEM), Generic Electronic Module (GEM) harness is open or shorted, Generic Electronic Module (GEM) 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 28,007

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
FAQs
Comments
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Code P1828 Description

The transfer case is equipped with an electromagnetic clutch which is located inside the case. This clutch is used to spin up the front driveline when shifting from 2WD to 4H mode at speed. When the control switch on the instrument panel is turned, the Generic Electronic Module (GEM) recognizes that a shift has been requested and activates the electromagnetic clutch and the relays which power the transfer case shift motor. When the shift motor reaches the desired position, as determined by the contact plate position inputs to the GEM, power to the shift relays and motors will be removed. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the mainshaft hub to the drive sprocket.Finally, the front axle collar is engaged and the electromagnetic clutch is deactivated. The transfer case clutch relay is an electromechanical relay used to activate the transfer case clutch within the transfer case.

OBDII Code P1828 - Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure - AutoCodes.com — P1828 Code - Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure

What does this mean?

What are the Possible Causes of the DTC P1828?

Faulty Generic Electronic Module (GEM)
Generic Electronic Module (GEM) harness is open or shorted
Generic Electronic Module (GEM) circuit poor electrical connection

How to Fix the DTC P1828?

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 P1828 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.

Need more information about the P1828 code?

Need more information on how to fix the P1828 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1828 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1828 Ford — Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
P1828 Lincoln — Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
P1828 Mercury — Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
P1828 Mitsubishi — Shift Fork Position Sensor 2 System Neutral

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 P1828 Code

1. What are common symptoms of OBDII code P1828?

Common symptoms of code P1828 may include difficulty shifting gears, erratic shifting behavior, and the transmission getting stuck in a specific gear.

2. What causes OBDII code P1828 to trigger?

Code P1828 is typically triggered by a failure in the transmission transfer case counter clockwise shift relay coil circuit. This can be caused by issues such as damaged wiring, a faulty relay coil, or a malfunctioning transfer case motor.

3. How serious is OBDII code P1828?

Code P1828 should be addressed promptly as it can lead to transmission shifting issues, which can affect the vehicle's drivability and potentially cause further damage if left unresolved.

4. Can I continue driving with OBDII code P1828?

It is not recommended to continue driving with code P1828 present, as it can cause transmission problems that may lead to safety hazards or additional damage to the vehicle.

5. How can I diagnose OBDII code P1828?

Diagnosing code P1828 typically involves using a scan tool to retrieve the code, inspecting the wiring and connections related to the transfer case shift relay coil circuit, and testing the relay coil and transfer case motor for proper functionality.

6. Is it possible to repair OBDII code P1828 myself?

Repairing code P1828 may require a good understanding of automotive electrical systems and transmission components. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

7. How much does it cost to fix OBDII code P1828?

The cost of fixing code P1828 can vary depending on the exact cause of the issue and the labor rates of the repair shop. It may involve replacing damaged wiring, the relay coil, or the transfer case motor.

8. Can a low battery voltage trigger OBDII code P1828?

Yes, a low battery voltage can potentially trigger code P1828 as it may affect the proper functioning of the relay coil circuit or the transfer case motor. It is important to ensure the battery is in good condition when diagnosing this code.

9. Will resetting the OBDII code P1828 make it go away permanently?

Resetting the code may temporarily clear the error code, but if the underlying issue causing P1828 is not addressed, the code is likely to return. It is important to diagnose and repair the root cause of the problem for a permanent fix.

10. Can extreme weather conditions affect OBDII code P1828?

Extreme weather conditions, especially moisture or water exposure, can potentially impact the transmission transfer case components and lead to issues triggering code P1828. It is important to keep the vehicle protected and well-maintained in such conditions.