What is an OBD2 code?

An OBD2 (On-Board Diagnostics) code is a diagnostic trouble code (DTC) generated by your vehicle's computer system when it detects a problem. These codes help identify specific issues with your vehicle's engine, transmission, emissions, or other systems.

How do I read OBD2 codes?

To read OBD2 codes, you'll need an OBD2 scanner. Plug it into your vehicle's OBD2 port (usually located under the dashboard), turn your key to the 'ON' position, and follow your scanner's instructions to retrieve the codes. Each code starts with a letter (P, B, C, or U) followed by four numbers.

What do the different types of OBD2 codes mean?

OBD2 codes are categorized by their first letter: P (Powertrain) for engine and transmission issues, B (Body) for interior systems like airbags, C (Chassis) for mechanical systems like brakes, and U (Network) for computer and module communication problems.

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Home » OBD2 Codes » U0625

Code U0625

Symptoms

• Engine may not start

• Check Engine Light is on

• Possible stalling

Common Causes

• Faulty Fuel Pump Control Module

• Open or shorted wiring harness

• Poor electrical connection

Glossary

PCM: Powertrain Control Module

FPCM: Fuel Pump Control Module

Related Codes

• U0109

• P0627

Laymans terms

This code means that one of the car's computers is having trouble talking to another computer. It's like when two friends can't hear each other on the phone.

Explanation

The U0625 code indicates a lost communication with the Fuel Pump Control Module.

Technical description

U0625 is a diagnostic trouble code (DTC) that stands for 'Lost Communication With Fuel Pump Control Module.' It means that the vehicle's main computer, known as the Powertrain Control Module (PCM), is not receiving a signal from the Fuel Pump Control Module (FPCM). This can be due to a wiring issue, a failed module, or a problem with the network communication lines.

Diagnosis steps

• Check for other related codes

• Inspect wiring and connectors to the Fuel Pump Control Module

• Test the Fuel Pump Control Module

Repair procedures

• Repair or replace damaged wiring

• Reconnect or replace faulty connectors

• Replace the Fuel Pump Control Module if necessary

Tools required

• OBD-II scanner

• Multimeter

• Wiring diagram

Estimated repair cost

$150 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regular maintenance checks

• Ensure connectors are secure

• Avoid harsh driving conditions

Error code type

Communication Error

User experience recommendations

• Do not ignore the Check Engine Light

• Have the vehicle inspected by a professional

• Regularly check for software updates

Warranty information

Check with your vehicle manufacturer for warranty coverage on electronic components.

Historical data

This code has been associated with communication issues in vehicles with complex electronic systems.

Urgency level

Moderate – It's important to address this issue to prevent potential starting problems.

Legal and safety notice

Driving with this code may lead to unexpected vehicle behavior. Always ensure your vehicle is safe to operate.

Testing conditions

• Engine running

• Vehicle stationary

Component location

The Fuel Pump Control Module is typically located near the fuel tank or within the fuel pump assembly.

FAQs

Q: Can I drive with a U0625 code?
A: While you may be able to drive, it's best to address the issue to avoid potential starting problems.

Q: How do I clear a U0625 code?
A: Fix the underlying issue and use an OBD-II scanner to clear the code.

Last updated: Oct 29, 2025 • Source: internal database

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