AutoCodes – Honda – P0842 Honda

P0842 Honda Code - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit Low

Quick Answer

Transmission fluid pressure switch A (2nd clutch) is installed in the hydraulic pressure circuit to the 2nd clutch. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Fluid Pressure Switch 'A' 2nd Clutch. 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: P0842 Honda indicates Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit Low.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Fluid Pressure Switch 'A' 2nd Clutch.
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 26,649

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 03, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0842 Honda Description

Transmission fluid pressure switch A (2nd clutch) is installed in the hydraulic pressure circuit to the 2nd clutch. When hydraulic pressure is supplied to the 2nd clutch, the switch is turned ON. When hydraulic pressure is not supplied to the 2nd clutch, the switch is turned OFF. The signal from transmission fluid pressure switch A (2nd clutch) is input to the Powertrain Control Module (PCM). The PCM detects the hydraulic pressure supply conditions at the gear change to 2nd gear (1st to 2nd, 3rd to 2nd) to reduce the shock that occurs at the gear change. If transmission fluid pressure switch A (2nd clutch) is OFF while driving the vehicle with the rotation speed ratio of the input/output pulses is that of 2nd gear, the PCM detects a transmission fluid pressure switch A (2nd clutch) failure and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0842 Honda - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit Low - AutoCodes.com — P0842 Honda Code - Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0842 Honda?

Low transmission fluid level
Dirty transmission fluid
Faulty Transmission Fluid Pressure Switch 'A' 2nd Clutch
Transmission Fluid Pressure Switch 'A' 2nd Clutch harness or connectors
Transmission Fluid Pressure Switch 'A' 2nd Clutch circuit is open or shorted
Transmission internal mechanical problem

How to Fix the DTC P0842 Honda?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0842 Honda 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 P0842 Honda code?

Need more information on how to fix the P0842 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0842 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

P0842 2016 Honda CR-V — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
P0842 2017 Honda CR-V — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
P0842 2018 Honda CR-V — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
P0842 2019 Honda CR-V — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
P0842 2020 Honda CR-V — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low
P0842 2021 Honda CR-V — Transmission Fluid Pressure Sensor/Switch 'A' Circuit Low

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 P0842 Honda Code

What are the common symptoms of OBDII code P0842 in a Honda vehicle?

Common symptoms of OBDII code P0842 in a Honda vehicle may include harsh shifting, transmission slipping, illuminated Check Engine light, and decreased fuel efficiency.

What are the possible causes of OBDII code P0842 in a Honda vehicle?

Possible causes of OBDII code P0842 in a Honda vehicle include a faulty transmission fluid pressure switch, low transmission fluid levels, a malfunctioning transmission control module (TCM), or wiring issues.

How can I diagnose OBDII code P0842 in a Honda vehicle?

Diagnosing OBDII code P0842 in a Honda vehicle involves using a diagnostic scanner to retrieve the specific trouble code, inspecting the transmission fluid level and quality, testing the transmission fluid pressure switch, and checking for any visible wiring harness damage.

What does the Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit Low mean?

The Transmission Fluid Pressure Switch 'A' 2nd Clutch Circuit Low (P0842) indicates that the signal sent by the transmission fluid pressure switch for the 2nd clutch in the transmission is lower than the expected range.

How serious is OBDII code P0842 in a Honda vehicle?

OBDII code P0842 in a Honda vehicle should be addressed promptly as it can lead to transmission issues and potential damage if left unresolved. It is recommended to have the vehicle diagnosed and repaired as soon as possible.

Can I continue driving my Honda with OBDII code P0842?

It is not recommended to continue driving your Honda with OBDII code P0842 as it can lead to further transmission problems and potentially cause more damage. It is best to have the issue diagnosed and repaired before driving the vehicle again.

How can OBDII code P0842 in a Honda be repaired?

Repairing OBDII code P0842 in a Honda typically involves replacing the faulty transmission fluid pressure switch, checking and topping up the transmission fluid level if needed, and addressing any underlying issues such as wiring problems or TCM malfunctions.

Is it possible to reset OBDII code P0842 in a Honda without fixing the issue?

While you can clear the trouble code temporarily by resetting the vehicle's ECM, the underlying issue causing OBDII code P0842 will still persist. It is essential to diagnose and repair the root cause of the problem to prevent further issues.

What are the repair costs associated with fixing OBDII code P0842 in a Honda?

The repair costs for OBDII code P0842 in a Honda can vary depending on the exact cause of the issue, labor rates, and parts needed. It is recommended to consult with a professional mechanic or dealership for an accurate estimate of repair costs.