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AutoCodes – Dodge – P0629 Dodge

P0629 Dodge Code - High Voltage Detected At The Fuel Lift Pump

Quick Answer

The Fuel Lift Pump Control circuit is a low side driver inside the Powertrain Control Module (PCM). Common causes include Faulty Fuel Lift Pump, Fuel Lift Pump harness is open or shorted, Fuel Lift Pump circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0629 Dodge indicates High Voltage Detected At The Fuel Lift Pump.
Common causes
Common causes include Faulty Fuel Lift Pump, Fuel Lift Pump harness is open or shorted, Fuel Lift Pump circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 8,795
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jul 14, 2019
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Code P0629 Dodge Description

The Fuel Lift Pump Control circuit is a low side driver inside the Powertrain Control Module (PCM). The PCM sends a ground signal to the Totally Integrated Power Module (TIPM). The TIPM then sends a 12 Volt feed to the Fuel Lift Pump. The Fuel Lift Pump grounds through a dedicated ground circuit. The MIL lamp and ETC lamp will illuminate immediately after this diagnostic runs and fails. During this time, the customer may experience engine stumble/stall or low power due to lack of fuel supply to the high pressure system. The PCM will turn off the MIL lamp once the diagnostic runs and passes in four consecutive drive cycles.
OBDII Code P0629 Dodge - High Voltage Detected At The Fuel Lift Pump - AutoCodes.com
P0629 Dodge Code - High Voltage Detected At The Fuel Lift Pump
What does this mean?

What are the Possible Causes of the DTC P0629 Dodge?

  • Faulty Fuel Lift Pump
  • Fuel Lift Pump harness is open or shorted
  • Fuel Lift Pump circuit poor electrical connection
  • Totally Integrated Power Module (TIPM) Not Configured Properly
  • Faulty Totally Integrated Power Module (TIPM)
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0629 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0629 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0629 Dodge code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0629 Dodge Code

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