The P2147 OBD-II code indicates a problem with the supply voltage circuit for the fuel injectors in group “A”. This code signals that the engine control module (PCM) has detected a low voltage condition affecting the operation of the fuel injectors.
What Does the P2147 Code Mean?
The P2147 code is triggered when the PCM identifies that the supply voltage to one or more fuel injectors in a designated group is below an acceptable threshold. This can lead to improper functioning of the fuel injectors, causing the engine to run inefficiently.
What Causes the P2147 Code?
- Fuel injector failure
- Powertrain Control Module (PCM) failure
- Wiring issues, such as shorts or breaks in the wiring harness
What Are the Symptoms of the P2147 Code?
- Engine may run rough
- Possible decrease in engine performance
- Check Engine Light illuminated
How Serious Is the P2147 Code?
The P2147 code is considered urgent and signals significant malfunctions that could lead to severe damage to the vehicle or pose risks to driver and passenger safety. Immediate action is recommended to prevent further complications.
How to Diagnose the P2147 Code
To diagnose the P2147 code, a mechanic will typically follow these steps:
- Use an OBD-II scanner to confirm the P2147 code and check for any related codes.
- Inspect the wiring and connectors related to the fuel injectors for any visible damage.
- Test the voltage supply to the affected fuel injectors.
- Check the operation of the fuel injectors and the PCM.
Common Repairs for the P2147 Code
- Repair or replace damaged wiring or connectors.
- Replace faulty fuel injectors.
- Replace the Powertrain Control Module (PCM) if it is determined to be faulty.
How Much Does It Cost to Fix the P2147 Code?
The cost to repair the P2147 code can vary widely depending on the underlying cause. Simple wiring repairs may cost as little as $100, while replacing fuel injectors or the PCM can range from $300 to over $1,000, depending on labor rates and parts costs.
Can I Fix the P2147 Code Myself?
While some DIY enthusiasts may be able to address basic wiring issues or replace fuel injectors, diagnosing and repairing PCM-related problems often requires advanced knowledge and tools. It is advisable to consult with a professional mechanic to ensure a comprehensive diagnosis and repair.
