AutoCodes – Generic – P102A

P102A Code - Subfuel Solenoid Circuit Malfunction

Quick Answer

The Engine Control Module (ECM) monitors the Subfuel Solenoid Circuit for proper operation. Common causes include Faulty Subfuel Pump Relay, Faulty Subfuel Solenoid, Subfuel 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: P102A indicates Subfuel Solenoid Circuit Malfunction.
Common causes: Common causes include Faulty Subfuel Pump Relay, Faulty Subfuel Solenoid, Subfuel 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 16,233

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 Jul 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P102A Description

The Engine Control Module (ECM) monitors the Subfuel Solenoid Circuit for proper operation. The ECM sets the OBDII code when the Subfuel Solenoid is not to factory specifications.

OBDII Code P102A - Subfuel Solenoid Circuit Malfunction - AutoCodes.com — P102A Code - Subfuel Solenoid Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P102A?

Faulty Subfuel Pump Relay
Faulty Subfuel Solenoid
Subfuel Solenoid harness is open or shorted
Subfuel Solenoid circuit poor electrical connection
Faulty Subfuel Pump

How to Fix the DTC P102A?

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 P102A 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 P102A code?

Need more information on how to fix the P102A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P102A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P102A Honda — Subfuel Solenoid Circuit Malfunction

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 P102A Code

1. What are common symptoms of OBDII code P102A (Subfuel Solenoid Circuit Malfunction)?

- Common symptoms include rough idling, reduced engine performance, and possible stalling of the vehicle.

2. What causes the OBDII code P102A to trigger?

- The code P102A is usually triggered by a faulty subfuel solenoid, damaged wiring in the solenoid circuit, or a problem with the solenoid control module.

3. How serious is the OBDII code P102A (Subfuel Solenoid Circuit Malfunction)?

- While the code may not cause immediate danger, it can lead to poor engine performance and potential stalling, which can affect the safety and drivability of the vehicle.

4. Can I continue driving with the OBDII code P102A active?

- It is not recommended to continue driving with the code active, as it can lead to further damage to the engine and potentially leave you stranded if the vehicle stalls.

5. How can I diagnose the OBDII code P102A?

- Diagnosis typically involves using an OBDII scanner to read the code, followed by a thorough inspection of the subfuel solenoid, its wiring, and the control module.

6. What are the repair options for OBDII code P102A?

- Repair options include replacing the faulty subfuel solenoid, repairing damaged wiring, or replacing the solenoid control module, depending on the specific cause of the malfunction.

7. Can I fix the OBDII code P102A myself?

- If you have experience working on automotive electrical systems and access to the necessary tools, you may be able to diagnose and repair the issue yourself. Otherwise, it is recommended to seek professional help.

8. How much does it typically cost to repair the OBDII code P102A?

- The cost of repairing the code P102A can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

9. Will resetting the OBDII code P102A turn off the check engine light?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear, along with the check engine light.

10. How can I prevent the OBDII code P102A from recurring in the future?

- Regular maintenance and inspections of the subfuel solenoid, wiring, and control module can help prevent the code P102A from recurring in the future.