P0629 Chrysler Code - High Voltage Detected At The Fuel Lift Pump
Quick Answer
The P0629 code in Chrysler vehicles indicates that there is a high voltage detected at the fuel lift pump. Common causes include Faulty fuel lift pump, Wiring or connection issues in the fuel lift pump circuit, Corrosion or damage to the fuel pump relay. 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 Chrysler indicates High Voltage Detected At The Fuel Lift Pump.
- Common causes
- Common causes include Faulty fuel lift pump, Wiring or connection issues in the fuel lift pump circuit, Corrosion or damage to the fuel pump relay.
- 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 P0629 Chrysler Description
The P0629 code in Chrysler vehicles indicates that there is a high voltage detected at the fuel lift pump. The fuel lift pump is responsible for delivering fuel from the tank to the engine, and a high voltage reading could indicate an issue with the pump or its electrical system. This can lead to poor fuel delivery, which can affect the engine's performance, fuel efficiency, and overall drivability of the vehicle. If not addressed, this issue can potentially lead to engine stalling, rough idling, and even complete engine failure.
Common Causes of P0629 Chrysler
- Faulty fuel lift pump
- Wiring or connection issues in the fuel lift pump circuit
- Corrosion or damage to the fuel pump relay
- Issues with the fuel pump control module
- Electrical system malfunctions or shorts
Symptoms of P0629 Chrysler
- Engine misfires or hesitation during acceleration
- Difficulty starting the engine
- Reduced fuel efficiency
- Engine stalling
- Illumination of the check engine light
How to Fix P0629 Chrysler
- Diagnose the issue by using a diagnostic scanner to read the code and identify the exact cause of the high voltage at the fuel lift pump.
- Inspect the fuel lift pump, wiring, and connections for any signs of damage, corrosion, or loose connections.
- Test the fuel pump relay and fuel pump control module for proper functionality.
- Replace any faulty components, such as the fuel lift pump, relay, or control module.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0629 Chrysler
The cost of repairing a high voltage issue at the fuel lift pump in a Chrysler vehicle can vary depending on the exact cause of the problem and the cost of parts and labor. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate.
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Frequently Asked Questions about P0629 Chrysler Code
1. What does the OBDII code P0629 mean for a Chrysler vehicle?
P0629 indicates that the Engine Control Module (ECM) has detected a high voltage condition at the fuel lift pump circuit.
2. What are the common symptoms of a P0629 code on a Chrysler?
Symptoms may include difficulty starting the engine, reduced engine performance, stalling, or the check engine light being illuminated.
3. What causes the P0629 code to appear on a Chrysler?
Common causes include a faulty fuel lift pump, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump relay, or a malfunctioning ECM.
4. Can I continue driving my Chrysler with a P0629 code?
Driving with a P0629 code is not recommended, as it can lead to poor engine performance or potential stalling, which may be unsafe.
5. How do I diagnose a P0629 code on a Chrysler?
Diagnosis involves checking the fuel lift pump, inspecting the wiring and connectors for damage, testing the fuel pump relay, and verifying ECM functionality.
6. How do I fix the P0629 code on my Chrysler?
Repairs may include replacing the fuel lift pump, fixing or replacing damaged wiring or connectors, replacing the fuel pump relay, or reprogramming or replacing the ECM if necessary.
7. Is a P0629 code specific to Chrysler vehicles?
No, P0629 is a generic OBDII code, but the troubleshooting steps may vary depending on the vehicle make and model.
8. Can a bad fuel pump relay cause the P0629 code?
Yes, a defective fuel pump relay can cause high voltage to be detected in the fuel lift pump circuit, triggering the P0629 code.
9. How much does it cost to repair a P0629 code on a Chrysler?
Repair costs can vary, but replacing a fuel lift pump typically costs $300-$700, while addressing wiring issues or replacing the fuel pump relay can be less expensive.
10. Can a weak battery cause the P0629 code to trigger?
A weak battery is unlikely to cause this code, but electrical issues related to the charging system can sometimes contribute to voltage irregularities in the fuel pump circuit.
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