What is P0004 : Engine Error code Causes Explained
This Guide covers the P0004 engine trouble code, which signals a high fuel volume regulator control circuit. This DTC can cause fuel supply issues, engine performance issues, and stalling.
How to Identify a DTCs Number
The Diagnostic Trouble Code (DTC) P0004 refers to an issue with the Fuel Volume Regulator Control Circuit – High.
Understand, this trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.
This error occurs when the Powertrain Control Module (PCM) detects an excessively high voltage signal from the fuel volume regulator, which controls the amount of fuel sent to the engine.
Causes of P0004 Code:
- Fuel shutoff valve:
The valve may be defective or have a broken wire - Sensor connector:
The connector may be corroded. - Engine control module (ECM):
The ECM may be damaged - Clogged EGR pipe:
The EGR pipe may be clogged with carbon buildup. - Fuel volume regulator:
The regulator may not be sending the correct voltage signal
Risk Level of P0004 Error Code:
The P0004 engine error code indicates a high-risk issue with the fuel volume control circuit (high output) in diesel or direct-injection engines.
It is strongly advised to get the car diagnosed and repaired if the P0004 code continues in order to prevent dangerous driving situations.
Common Car Brands Affected by P0004 Code:
The P0004 engine error code is commonly found in the following list.
- Vauxhall
- Ford
- Mazda
- Hyundai
- Dodge
- Nissan
Video: P0004 Engine Error code
FAQ’s
What is the P0004 error code?
The P0004 code stands for “Fuel Volume Regulator Control Circuit High”, meaning the Powertrain Control Module (PCM) has detected an abnormally high voltage in the fuel volume regulator circuit.
What causes the P0004 error?
Common causes include a faulty fuel volume regulator, damaged wiring, poor electrical connections, a failing fuel pump, or PCM issues.
What is the risk level of the P0004 code?
The risk level is high, as it can lead to unstable fuel delivery, poor engine performance, Sensor Connector, stalling, or difficulty starting.
Which vehicles are affected by the P0004 code?
This code is rare but can appear in diesel and direct-injection gasoline vehicles, including models from Vauxhall, Ford, Mazda, Hyundai, Dodge and Nissan.