P0006 medium Severity

P0006: Fuel Shutoff Valve "A" Control Circuit Low

Check Engine Light illuminated; possible hard start, engine stall, reduced performance, engine running after ignition off

Overview

P0006 indicates low signal/voltage in the fuel shutoff valve A control circuit indicating a fault in the fuel shutoff valve or its wiring/circuit leading to drivability and starting issues

Common Symptoms

  • Check Engine/MIL illuminated
  • Engine may fail to start or hard starting
  • Engine may continue running after key off (dieseling)
  • Engine stalling or rough idle
  • Reduced engine performance and mileage

Most Common Causes

Faulty fuel shutoff valve (A) medium

Valve may not actuate or signal correctly leading to low circuit voltage

Damaged or shorted wiring/connectors in shutoff valve circuit medium

Corroded, broken, or loose electrical connections can cause low signal

ECM/PCM internal fault or software issue low

ECM may mistakenly log code if software glitch or internal fault

Low fuel pressure due to pump or regulator issues low

Indirectly may cause similar symptoms but less documented for P0006 specifically

Diagnostic Steps

  1. Connect OBD-II scanner and confirm P0006; record any additional codes and freeze frame data
    Expected: P0006 present with no conflicting codes
    Interpretation: Confirms repeatable code and provides baseline
  2. Visually inspect fuel shutoff valve, wiring harness, connectors for damage, corrosion or loose pins
    Expected: Connector securely seated; no broken wires
    Interpretation: Bad wiring/connector will require repair or replacement
  3. Test control circuit voltage/resistance at fuel shutoff valve with multimeter per manufacturer specs
    Expected: Voltage within specified range; correct resistance
    Interpretation: Out-of-spec results suggest valve or wiring fault
  4. If electrical tests pass, check fuel shutoff valve operation and fuel pressure levels
    Expected: Valve actuates and fuel pressure is within range
    Interpretation: Failure indicates component replacement or further fuel system testing
  5. Consider advanced ECM/PCM testing or reflash if all hardware tests normal
    Expected: No electrical or mechanical fault found
    Interpretation: Software/ECM fault possible (low confidence)

Repair Solutions

Replace faulty fuel shutoff valve medium
Estimated Cost: $150 - $500

Typical part cost plus labor; varies by vehicle

Repair or replace damaged wiring/connectors medium
Estimated Cost: $50 - $250

Costs depend on extent of wiring harness repairs

ECM software reflash or replacement hard
Estimated Cost: $300 - $1200

Only after ruling out all electrical and mechanical issues

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Confusion with P0005 or P0007 fuel shutoff related codes
  • Misattributing symptoms to general fuel pump or filter issues without electrical verification

Frequently Asked Questions

What does a P0006 diagnostic trouble code signify?

Fuel Shutoff Valve "A" Control Circuit Low is the standard definition for P0006. This diagnostic code is triggered when the ECU detects a problem in the Fuel System.

Reflecting on severity: How bad is P0006?

You should treat P0006 as a medium issue. Check Engine Light illuminated; possible hard start, engine stall, reduced performance, engine running after ignition off

Symptoms associated with DTC P0006

You may experience the following: Check Engine/MIL illuminated, Engine may fail to start or hard starting, Engine may continue running after key off (dieseling).

Potential causes for OBDII code P0006

The most common causes are: Faulty fuel shutoff valve (A), Damaged or shorted wiring/connectors in shutoff valve circuit, ECM/PCM internal fault or software issue.

Repair cost breakdown for P0006

It depends on what needs to be fixed. Repair or replace damaged wiring/connectors repairs are cheaper (~$250), while ECM software reflash or replacement repairs are on the higher end (~$1200).

What cars are affected by the P0006 code?

P0006 is not specific to any one brand. It can appear on Ford, Dodge, Toyota, Honda, Jeep, and other vehicles.

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