P1403 Jeep Code - 5 volt reference voltage to EGR valve missing
Quick Answer
The P1403 diagnostic trouble code for Jeep vehicles indicates that the 5-volt reference voltage to the Exhaust Gas Recirculation (EGR) valve is missing. Common causes include Faulty EGR valve, Damaged wiring or connectors in the EGR circuit, Malfunctioning Engine Control Module (ECM). Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P1403 Jeep indicates 5 volt reference voltage to EGR valve missing.
- Common causes
- Common causes include Faulty EGR valve, Damaged wiring or connectors in the EGR circuit, Malfunctioning Engine Control Module (ECM).
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1403 Jeep Description
The P1403 diagnostic trouble code for Jeep vehicles indicates that the 5-volt reference voltage to the Exhaust Gas Recirculation (EGR) valve is missing. The EGR valve is an important component of the vehicle's emission control system, responsible for recirculating a portion of the exhaust gases back into the engine cylinders to reduce nitrogen oxide emissions. The 5-volt reference voltage is essential for the EGR valve to function properly, as it regulates the valve's position and operation.
Common Causes of P1403 Jeep
- Faulty EGR valve
- Damaged wiring or connectors in the EGR circuit
- Malfunctioning Engine Control Module (ECM)
- Power supply issue or voltage drop
- Corrosion or poor connection in the electrical system
Symptoms of P1403 Jeep
- Reduced fuel efficiency
- Rough idling or engine vibrations
- Engine misfires
- Stalling or hesitation during acceleration
- Check Engine Light illuminated
How to Fix P1403 Jeep
- Perform a thorough inspection of the EGR valve, wiring, and connectors for any visible damage or corrosion.
- Test the 5-volt reference voltage output from the ECM to the EGR valve using a multimeter to identify any voltage drop or irregularities.
- Replace the EGR valve if it is found to be faulty and ensure proper installation and calibration.
- Repair or replace damaged wiring or connectors in the EGR circuit.
- Clear the diagnostic trouble codes and perform a test drive to verify that the issue has been resolved.
Cost to Fix P1403 Jeep
The typical repair costs for addressing a P1403 code on a Jeep vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, replacing a faulty EGR valve can cost between $150 to $300, while repairing wiring or connectors may range from $50 to $150. Additional diagnostic time and labor charges may apply, with total repair costs potentially ranging from $200 to $500 or more. It's recommended to consult with a qualified mechanic or repair shop for a more accurate estimate based on your vehicle's make and model, as well as the extent of the repair needed.
When is the Code Detected?
Need more information about the P1403 Jeep code?
Need more information on how to fix the P1403 Jeep code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1403 Jeep code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1403 Jeep Code
No Frequently Asked Questions about P1403 Jeep Code found.
Discuss the causes and fixes for P1403 Jeep OBDII Code
Code P1403 Jeep comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.