AutoCodes – Honda – P1259 1998 Honda Civic

P1259 1998 Honda Civic Code - VTEC System Malfunction

Quick Answer

The Variable Valve Timing and Lift Electronic Control (VTEC) system activate the VTEC solenoid valve by the command from the Powertrain Control Module (PCM), and it charges/discharges the hydraulic circuit of the VTEC mechanism that is installed in the valve system to switch valve timing between Low and High. Common causes include Low engine oil level or oil pressure, Faulty Variable Valve Timing and Lift Electronic Control (VTEC) solenoid, VTEC Solenoid harness is open or shorted. 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: P1259 1998 Honda Civic indicates VTEC System Malfunction.
Common causes: Common causes include Low engine oil level or oil pressure, Faulty Variable Valve Timing and Lift Electronic Control (VTEC) solenoid, VTEC Solenoid harness is open or shorted.
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 15,019

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 Jul 21, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1259 1998 Honda Civic Description

The Variable Valve Timing and Lift Electronic Control (VTEC) system activate the VTEC solenoid valve by the command from the Powertrain Control Module (PCM), and it charges/discharges the hydraulic circuit of the VTEC mechanism that is installed in the valve system to switch valve timing between Low and High. The PCM monitors oil pressure conditions in the hydraulic circuit of the VTEC mechanism according to the VTEC oil pressure switch downstream of the VTEC solenoid valve. If there is a disparity between the oil pressure condition in the hydraulic circuit that is determined by the PCM command, and the oil pressure condition that is determined by the status of the VTEC oil pressure switch, the system is considered faulty and the P1259 code is stored.

OBDII Code P1259 1998 Honda Civic - VTEC System Malfunction - AutoCodes.com — P1259 1998 Honda Civic Code - VTEC System Malfunction

What does this mean?

What are the Possible Causes of the DTC P1259 1998 Honda Civic?

Low engine oil level or oil pressure
Faulty Variable Valve Timing and Lift Electronic Control (VTEC) solenoid
VTEC Solenoid harness is open or shorted
VTEC circuit poor electrical connection
Faulty VTEC oil pressure switch

How to Fix the DTC P1259 1998 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 does this mean?

Code Tech Notes

Make sure the oil level is good and it is not dirty, if the oil is dirty replace it with the correct oil weight. Dirty oil can clog the VTEC assembly so you might have to take it apart and clean it (and replace the seals).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1259 1998 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 P1259 1998 Honda Civic 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 P1259 1998 Honda Civic Code

1. What does OBDII code P1259 on a 1998 Honda Civic mean?

- It indicates a VTEC System Malfunction.

2. What are the common symptoms of a P1259 code in a 1998 Honda Civic?

- Common symptoms include reduced engine performance, rough idling, and the check engine light being illuminated.

3. What are the possible causes of a VTEC System Malfunction in a 1998 Honda Civic?

- The causes can include a faulty VTEC solenoid, low engine oil pressure, clogged oil passages, or issues with the VTEC pressure switch.

4. How can I diagnose a P1259 code in my 1998 Honda Civic?

- Diagnosis typically involves checking the VTEC system components for proper functioning, inspecting oil levels and pressure, and using a scan tool to retrieve specific error codes.

5. Can I continue driving my 1998 Honda Civic with a P1259 code?

- It is not recommended to drive your vehicle with a VTEC System Malfunction as it can lead to further damage to the engine components.

6. How can I repair a VTEC System Malfunction in my 1998 Honda Civic?

- Repair options may include replacing the VTEC solenoid, cleaning oil passages, checking oil levels, or addressing issues with the VTEC pressure switch.

7. Can I reset the P1259 code in my 1998 Honda Civic by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is advisable to diagnose and repair the underlying issue causing the VTEC System Malfunction.

8. Will a P1259 code affect the fuel efficiency of my 1998 Honda Civic?

- Yes, a VTEC System Malfunction can impact fuel efficiency due to the engine not operating at peak performance.

9. How much does it typically cost to repair a P1259 code in a 1998 Honda Civic?

- The cost of repairs can vary depending on the specific issue, but it is advisable to consult a mechanic for an accurate diagnosis and cost estimate.

10. Are there any preventative maintenance tips to avoid a VTEC System Malfunction in my 1998 Honda Civic?

- Regularly checking and changing the engine oil, maintaining proper oil levels, and addressing any engine performance issues promptly can help prevent VTEC system malfunctions.