AutoCodes – Hyundai – C1527 Hyundai

C1527 Hyundai Code - Gear R Switch Error

Quick Answer

If the wrong reverse gear signal has been set for a certain period of time, a failure is recognized. Common causes include Faulty Gear R Switch, Gear R Switch harness is open or shorted, Gear R Switch 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: C1527 Hyundai indicates Gear R Switch Error.
Common causes: Common causes include Faulty Gear R Switch, Gear R Switch harness is open or shorted, Gear R Switch 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 1,170

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 Oct 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1527 Hyundai Description

If the wrong reverse gear signal has been set for a certain period of time, a failure is recognized. [A/T] Hydraulic Electronic Control Unit (HECU) receives reverse gear switch signal from TCM via C-CAN. [M/T] Cluster receives back up lamp signal from IPS (Intelligent Power Switch System) via B-CAN and sends it to HECU via C-CAN. The HECU monitors the Gear R Switch (Transaxle Range Switch). The HECU sets the OBDII code when the Gear R Switch is not to factory specifications.

OBDII Code C1527 Hyundai - Gear R Switch Error - AutoCodes.com — C1527 Hyundai Code - Gear R Switch Error

What does this mean?

What are the Possible Causes of the DTC C1527 Hyundai?

Faulty Gear R Switch
Gear R Switch harness is open or shorted
Gear R Switch circuit poor electrical connection
Faulty Back-up Lamp Switch

How to Fix the DTC C1527 Hyundai?

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 C1527 Hyundai 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 C1527 Hyundai code?

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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.

Frequently Asked Questions about C1527 Hyundai Code

What does the OBDII code C1527 mean in a Hyundai?

The C1527 code indicates a Gear R Switch Error, which refers to a malfunction in the reverse gear switch that may affect the vehicle's transmission control.

What are the common symptoms of the C1527 code?

Symptoms may include the inability to shift into reverse, erratic transmission behavior, or the check engine light illuminating.

What can cause the C1527 code to trigger?

Causes may include a faulty reverse gear switch, wiring issues, or problems with the transmission control module.

How can I diagnose the C1527 code?

You can diagnose the code by using an OBDII scanner to confirm the code, inspecting the reverse gear switch and its wiring, and checking for related codes that may provide additional context.

What should I check first when dealing with a C1527 code?

Start by inspecting the reverse gear switch and its connections for any signs of damage or corrosion, as these are common points of failure.

Can I drive my Hyundai with the C1527 code?

While it may be possible to drive the vehicle, it's not recommended as it can lead to further transmission issues or difficulty shifting into reverse.

What are some repair tips for fixing the C1527 code?

Repair tips include replacing the faulty reverse gear switch, repairing any damaged wiring, and ensuring proper connections to the transmission control module.

Will clearing the C1527 code fix the problem?

Clearing the code may temporarily turn off the check engine light, but it won't fix the underlying issue. The code is likely to reappear if the root cause is not addressed.

How much does it typically cost to repair the C1527 code?

Repair costs can vary, but you might expect to pay between $100 to $300, depending on whether the issue is with the switch, wiring, or a more complex transmission problem.

Is the C1527 code specific to Hyundai vehicles?

While the C1527 code may be encountered in various Hyundai models, it is not exclusive to them. However, the interpretation and related systems may differ across brands.