AutoCodes – Generic – P1835

P1835 Code - Kick-Down Switch Circuit

Quick Answer

With the key on and engine running, throttle angle less than 89%, the Engine Control Module (ECM) sent a Kickdown request to the Transmission Control Module (TCM). Common causes include Faulty Kick-Down Switch, Kick-Down Switch harness is open or shorted, Kick-Down 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: P1835 indicates Kick-Down Switch Circuit.
Common causes: Common causes include Faulty Kick-Down Switch, Kick-Down Switch harness is open or shorted, Kick-Down 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 14,543

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1835 Description

With the key on and engine running, throttle angle less than 89%, the Engine Control Module (ECM) sent a Kickdown request to the Transmission Control Module (TCM).

OBDII Code P1835 - Kick-Down Switch Circuit - AutoCodes.com — P1835 Code - Kick-Down Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P1835?

Faulty Kick-Down Switch
Kick-Down Switch harness is open or shorted
Kick-Down Switch circuit poor electrical connection

How to Fix the DTC P1835?

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 P1835 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 P1835 code?

Need more information on how to fix the P1835 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1835 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1835 Acura — Kick-Down Switch Always ON
P1835 Buick — Kick-Down Switch Circuit
P1835 Cadillac — Kick-Down Switch Circuit
P1835 Chevrolet — Kick-Down Switch Circuit
P1835 GMC — Kick-Down Switch Circuit
P1835 Honda — Kick-Down Switch Always ON
P1835 Isuzu — Kick-Down Switch Always ON
P1835 Pontiac — Kick-Down Switch Circuit
P1835 Saturn — Kick-Down Switch Circuit

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 P1835 Code

1. What does the OBDII code P1835 mean?

P1835 refers to a problem in the kick-down switch circuit, which is responsible for signaling the transmission to downshift during acceleration.

2. What are the common symptoms of code P1835?

Symptoms include delayed or improper downshifting, reduced acceleration, and possibly the illumination of the check engine light.

3. What causes code P1835 to appear?

Common causes include a faulty kick-down switch, damaged wiring or connectors in the circuit, or issues with the transmission control module (TCM).

4. How do I diagnose code P1835?

Inspect the kick-down switch and its wiring for damage, check for corrosion at connectors, and perform diagnostic tests on the TCM if necessary.

5. Can I drive my car with code P1835?

Driving with P1835 may lead to reduced performance and possible transmission damage, so it’s best to address the issue promptly.

6. How do I fix the P1835 code?

Repairs may include replacing the kick-down switch, repairing damaged wiring, cleaning connectors, or reprogramming the transmission control module.

7. How much does it cost to repair code P1835?

Repair costs vary, but replacing a kick-down switch typically costs $100-$300, while wiring repairs or module reprogramming may add to the expense.

8. Does code P1835 affect fuel efficiency?

Yes, improper downshifting can lead to inefficient engine operation, potentially reducing fuel economy.

9. Can a dirty transmission cause code P1835?

A dirty or contaminated transmission is unlikely to directly cause P1835 but could contribute to broader transmission issues that affect the kick-down switch’s operation.

10. Do I need a mechanic to fix code P1835?

If you’re experienced with automotive repairs, you can attempt basic fixes like inspecting the switch and wiring. Otherwise, a mechanic is recommended for proper diagnosis and repair.