The OBD code P1402 for Hyundai indicates an issue with the Diagnostic Module Tank Leakage (DMTL) system.
Symptoms include the Engine Light being ON.
This code is commonly caused by a faulty DMTL, open/shorted harness, or poor electrical connection.
It’s not a severe issue but should be addressed.
To fix it, inspect the wiring harness, connectors, and components for any damage or corrosion.
| Repair Importance Level | 6.67 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 6.67 (Out of 10) |
Symptoms of the Hyundai p1402 OBD Code
The vehicle may experience rough idling, poor acceleration, and increased fuel consumption with code P1402.
- Symptoms: Engine Light ON.
- Rough idle may be experienced.
- Loss of power during acceleration.
- Engine may stall at times.
Causes of the Hyundai p1402 OBD Code
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P1402 in Hyundai indicates an issue with the EGR valve position sensor circuit.
- P1402 can be caused by a faulty Diagnostic Module Tank Leakage (DMTL).
- A Diagnostic Module Tank Leakage harness that is open or shorted.
- A Diagnostic Module Tank Leakage circuit with a poor electrical connection.
Fixing Hyundai Error Code p1402 Step By Step
To address Hyundai fault code P1402, inspect the EGR valve and associated components for faults.
- To fix Hyundai OBDII code P1402, review the possible causes related to the EGR valve position sensor circuit.
- Visually inspect the wiring harness and connectors for any damage.
- Check the connector pins for signs of being broken, bent, pushed out, or corroded.
- Test the EGR valve position sensor for proper operation.
- Replace the EGR valve position sensor if necessary.
- Clear the fault code using a scan tool and test drive the vehicle to ensure the issue is resolved.
Cost Of Fixing Hyundai p1402 Fault Code
Diagnosing and repairing Hyundai P1402 involves testing and potentially replacing the EGR valve position sensor.
The cost to diagnose and fix the Hyundai OBD code P1402 typically ranges from $75 to $150, based on an estimated repair time of 1. 0 hour.
Factors like shop rates and complexity of the repair can influence the final cost.
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Details of the Hyundai p1402 OBD Code
Hyundai fault code P1402 relates to an issue with the EGR valve position sensor circuit.
Hyundai OBD code P1402 means the Differential Pressure Feedback Electronic (DPFE) sensor circuit high voltage.
This code is triggered by the Engine Control Module (ECM) when it detects a high voltage signal from the DPFE sensor.
The DPFE sensor is part of the EGR (Exhaust Gas Recirculation) system and is responsible for monitoring the exhaust gas flow.
When the ECM detects a high voltage signal from the DPFE sensor, it indicates a potential issue with the EGR system, which could lead to increased emissions or engine performance problems.
Mechanic’s Tech Notes
Detailed information on Hyundai fault code P1402, including symptoms, causes, and solutions for effective troubleshooting.
To diagnose Hyundai OBDII code P1402, check the TCM power and ground using a multimeter.
Verify TCM response over the CAN network with a scan tool.
Inspect wiring harness and connectors for damage, focusing on broken, bent, or corroded pins.
Reflash the TCM if needed.
This code typically indicates a fault in the transmission control module’s communication circuit.
By testing power, ground, and communication, you can pinpoint the issue accurately.
FAQ
OBD code P1402 in a Hyundai is commonly caused by a faulty Diagnostic Module Tank Leakage (DMTL), open/shorted harness, or poor electrical connection. Check and repair wiring/connectors.
Diagnose and fix OBD code P1402 in your Hyundai by checking DMTL system for faults. Inspect wiring, connectors, and components for damage or poor connections.
Yes, it is generally safe to drive with code P1402 in a Hyundai. Check DMTL system components for faults to prevent emissions issues.
Wrap Up
If your Hyundai is displaying OBD code P1402, you may experience issues with the EGR valve position sensor circuit.
This could be caused by a faulty EGR valve position sensor, damaged wiring, or poor electrical connections.
To address Hyundai OBD code P1402, start by checking the EGR valve position sensor and its wiring harness for any signs of damage or corrosion.
Test the sensor’s resistance and inspect the connector for any bent or pushed out pins.
Replace the sensor if necessary and ensure all connections are secure to resolve the issue.
