P0233 Code - Fuel Pump Secondary Circuit Intermittent
Quick Answer
The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty 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
- P0233 indicates Fuel Pump Secondary Circuit Intermittent.
- Common causes
- Common causes include Blown Fuel Pump fuse, Open Fuel Pump Monitor Circuit, Faulty 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.
Code P0233 Description
What are the Possible Causes of the DTC P0233?
- Blown Fuel Pump fuse
- Open Fuel Pump Monitor Circuit
- Faulty Fuel Pump Relay
- Damaged Engine Control Module (ECM)
How to Fix the DTC P0233?
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 P0233 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.
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Information for Specific Makes
- P0233 Chevrolet — Fuel Pump Secondary Circuit Intermittent
- P0233 Chrysler — Throttle Position Sensor 2 Circuit Low
- P0233 Dodge — Fuel Pump Secondary Circuit Intermittent
- P0233 Ford — Fuel Pump Secondary Circuit Intermittent
- P0233 GMC — Fuel Pump Secondary Circuit Intermittent
- P0233 Jeep — Fuel Pump Secondary Circuit Intermittent
- P0233 Lincoln — Fuel Pump Secondary Circuit Intermittent
- P0233 Mazda — Open Or Short Circuit In The Fuel Pump Primary Circuit
- P0233 Mercedes-Benz — Fuel Pump Secondary Circuit Intermittent
- P0233 Mercury — Fuel Pump Secondary Circuit Intermittent
Frequently Asked Questions about P0233 Code
1. What does OBDII code P0233 mean?
P0233 indicates an issue with the fuel pump secondary circuit, where the signal is intermittent or inconsistent.
2. What are the common symptoms of code P0233?
Symptoms include engine stalling, difficulty starting, reduced engine performance, and in some cases, the engine may not start at all.
3. What causes the P0233 code to appear?
Possible causes include a faulty fuel pump relay, damaged wiring or connectors in the fuel pump circuit, a failing fuel pump, or issues with the PCM (Powertrain Control Module).
4. Can I drive my car with a P0233 code?
It’s not recommended to drive with this code, as the fuel pump's intermittent operation could lead to stalling or a complete loss of power while driving.
5. How do I diagnose a P0233 code?
Diagnose it by inspecting the fuel pump relay, checking for damaged or corroded wiring/connectors, testing the fuel pump's voltage and ground connections, and scanning the PCM for additional related codes.
6. How is the P0233 code commonly repaired?
Repairs often involve replacing the fuel pump relay, repairing or replacing damaged wiring or connectors, fixing grounding issues, or, in some cases, replacing the fuel pump itself.
7. Can a bad fuel pump cause the P0233 code?
Yes, a failing or intermittent fuel pump can trigger this code due to inconsistent voltage or signal feedback.
8. How much does it cost to fix a P0233 code?
Repair costs vary but typically range from $100 to $800, depending on whether the issue is with the relay, wiring, or fuel pump.
9. Can a weak battery cause a P0233 code?
Yes, a weak or failing battery can contribute to this code by providing insufficient voltage to the fuel pump circuit.
10. Will clearing the code fix the P0233 issue?
Clearing the code may temporarily remove it, but the underlying issue must be addressed to prevent it from returning.
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