AutoCodes – Honda – P1870 1996 Honda Civic

P1870 1996 Honda Civic Code - Problem in CVT Speed Change Control Valve Assembly Circuit

Quick Answer

P1870 1996 Honda Civic indicates Problem in CVT Speed Change Control Valve Assembly Circuit. Common causes include Faulty CVT Speed Change Control Valve, CVT Speed Change Control Valve harness is open or shorted, CVT Speed Change Control Valve 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: P1870 1996 Honda Civic indicates Problem in CVT Speed Change Control Valve Assembly Circuit.
Common causes: Common causes include Faulty CVT Speed Change Control Valve, CVT Speed Change Control Valve harness is open or shorted, CVT Speed Change Control Valve 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 2,155

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 Sep 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1870 1996 Honda Civic Description

OBDII Code P1870 1996 Honda Civic - Problem in CVT Speed Change Control Valve Assembly Circuit - AutoCodes.com — P1870 1996 Honda Civic Code - Problem in CVT Speed Change Control Valve Assembly Circuit

What does this mean?

What are the Possible Causes of the DTC P1870 1996 Honda Civic?

Faulty CVT Speed Change Control Valve
CVT Speed Change Control Valve harness is open or shorted
CVT Speed Change Control Valve circuit poor electrical connection

How to Fix the DTC P1870 1996 Honda Civic?

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 P1870 1996 Honda Civic 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 P1870 1996 Honda Civic code?

Need more information on how to fix the P1870 1996 Honda Civic code? Get Access to Factory Service Manuals

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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 P1870 1996 Honda Civic Code

1. What does OBDII code P1870 mean on a 1996 Honda Civic?

P1870 indicates a problem in the CVT speed change control valve assembly circuit, which can affect the transmission's ability to shift properly.

2. What are common symptoms of code P1870 in a 1996 Honda Civic?

Symptoms may include a check engine light, erratic shifting, slipping transmission, poor acceleration, or unusual transmission noises.

3. What causes code P1870 in a 1996 Honda Civic?

Common causes include a faulty CVT speed change control valve, damaged wiring or connectors in the circuit, low or dirty transmission fluid, or an issue with the transmission control module (TCM).

4. Can low transmission fluid trigger code P1870?

Yes, low or contaminated transmission fluid can lead to improper operation of the CVT speed change control valve, potentially triggering code P1870.

5. How do I diagnose code P1870 on my Honda Civic?

Start by checking the transmission fluid level and condition, inspecting the wiring and connectors for damage, and testing the CVT speed change control valve for proper function.

6. Is it safe to drive with code P1870 on a 1996 Honda Civic?

Driving with this code can risk further transmission damage. Itâ€™s best to address the issue promptly to avoid costly repairs.

7. How do I fix code P1870 on a 1996 Honda Civic?

Repairs may involve replacing the CVT speed change control valve, repairing damaged wiring, cleaning or replacing transmission fluid, or reprogramming the TCM if necessary.

8. What tools are needed to troubleshoot code P1870?

Youâ€™ll need an OBDII scanner, a multimeter to check electrical connections, and possibly a service manual for your vehicle to locate components and wiring diagrams.

9. Can a failing TCM cause code P1870?

Yes, a malfunctioning transmission control module can fail to properly control the CVT speed change control valve, triggering code P1870.

10. How much does it cost to repair code P1870 on a 1996 Honda Civic?

Repair costs vary depending on the root cause. Replacing the CVT speed change control valve may cost $200â€“$500, while wiring repairs or TCM replacement can add additional costs.