What causes P102A on a Honda?

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

How do I fix P102A on a Honda?

Confirm the code with a scan tool and check for related faults Inspect the connector and wiring for corrosion, moisture, and loose pins Test the circuit and component operation against the control module command Check the wiring for an open or short before replacing parts Replace the failed component if it fails testing, then clear codes and retest

P102A The powertrain control module saw a fault in the subfuel solenoid circuit

Q: What does P102A mean on a Honda?

P102A. The powertrain control module saw a fault in the subfuel solenoid circuit. The secondary fuel pump may not run and the engine can stumble under heavy load.. Applies to Honda and Acura models that use this code.

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: Honda and Acura models that use this code

What does P102A mean on a Honda?

P102A. The powertrain control module saw a fault in the subfuel solenoid circuit. The secondary fuel pump may not run and the engine can stumble under heavy load.. This Honda-enhanced code applies to Honda and Acura models that use this code.

Common causes of 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 P102A

Confirm the code with a scan tool and check for related faults
Inspect the connector and wiring for corrosion, moisture, and loose pins
Test the circuit and component operation against the control module command
Check the wiring for an open or short before replacing parts
Replace the failed component if it fails testing, then clear codes and retest

Sources and review

Based on one independent source.
Last updated 2026-10-02.