P0002 medium Severity

P0002: Fuel Volume Regulator Control Circuit Range/Performance

May cause rough idling, reduced power, hesitation, stalling, or no-start conditions

Overview

OBD-II code P0002 indicates that the engine control module has detected that the fuel volume regulator control circuit is operating outside its expected range, affecting fuel delivery performance and potentially leading to drivability issues.

Common Symptoms

  • Check Engine Light illuminated
  • Engine running rough or unstable at idle
  • Reduced engine power or hesitation
  • Engine may not start or may stall
  • Decreased fuel economy

Most Common Causes

Faulty fuel volume regulator (FVR) solenoid high

Regulator failing to modulate fuel flow correctly triggers circuit range/performance fault

Damaged or corroded wiring/connectors in the FVR circuit high

Electrical issues leading to improper signal to/from the regulator

Fuel pump failure or low fuel pressure medium

Inconsistent pressure can make regulator operate outside expected range

Clogged fuel filter restricting flow medium

Restricted fuel flow can affect regulator performance

Engine Control Module (ECM) malfunction low

ECM may misinterpret inputs or provide incorrect commands

Diagnostic Steps

  1. Connect an OBD-II scanner and confirm P0002 and check for additional codes
    Expected: P0002 appears; note any related fuel system codes
    Interpretation: Ensures correct code identification and reveals other subsystem issues
  2. Visually inspect fuel volume regulator wiring and connectors
    Expected: No damage, corrosion, or loose connections
    Interpretation: Faulty wiring/connector issues are common triggers
  3. Measure voltage/resistance on the fuel volume regulator circuit with a multimeter
    Expected: Voltage/resistance within manufacturer spec
    Interpretation: Abnormal values indicate regulator or circuit electrical fault
  4. Perform fuel pressure test at the rail
    Expected: Fuel pressure within specified range
    Interpretation: Pressure irregularities may point toward pump/filter issues
  5. Check ECM for software updates or faults with advanced diagnostics
    Expected: No ECM errors or TSB conditions
    Interpretation: Rules out control module as root cause

Repair Solutions

Replace faulty fuel volume regulator medium
Estimated Cost: $150 - $500

Cost depends on vehicle model and part pricing

Repair or replace damaged wiring/connectors medium
Estimated Cost: $50 - $200

Includes harness repair, connector cleaning/corrosion fix

Replace fuel filter easy
Estimated Cost: $30 - $100

Recommended when flow restriction suspected

Replace fuel pump if defective hard
Estimated Cost: $300 - $800

Significant labor; required if pressure irregular

Reprogram or replace ECM if confirmed faulty hard
Estimated Cost: $500 - $1500

ECM faults are less common but costly

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Assuming fuel pump is defective without verifying regulator circuit and wiring

Frequently Asked Questions

What does the P0002 code mean?

Technically, the P0002 code represents Fuel Volume Regulator Control Circuit Range/Performance. It usually points to a fault within the Fuel System.

How serious is the P0002 code?

The P0002 code is considered medium severity. May cause rough idling, reduced power, hesitation, stalling, or no-start conditions

How do I know if I have code P0002?

Drivers often report: Check Engine Light illuminated, Engine running rough or unstable at idle, Reduced engine power or hesitation when this code is present.

Why is my car throwing a P0002 code?

Potential culprits include: Faulty fuel volume regulator (FVR) solenoid, Damaged or corroded wiring/connectors in the FVR circuit, Fuel pump failure or low fuel pressure. A proper diagnosis is recommended.

Repair cost breakdown for P0002

It depends on what needs to be fixed. Replace fuel filter repairs are cheaper (~$100), while Reprogram or replace ECM if confirmed faulty repairs are on the higher end (~$1500).

What cars are affected by the P0002 code?

Yes, P0002 is a generic code that applies to all OBD-II compliant vehicles, including Ford, Toyota, Honda, Chevrolet, Nissan, Dodge, BMW, and more.

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