P1642 Hyundai Code - Engine Control Module Non Immobilizer / Incorrect Type
Quick Answer
P1642 Hyundai indicates Engine Control Module Non Immobilizer / Incorrect Type. Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) circuit poor electrical connection. 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
- P1642 Hyundai indicates Engine Control Module Non Immobilizer / Incorrect Type.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) circuit poor electrical connection.
- 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 P1642 Hyundai Description
What are the Possible Causes of the DTC P1642 Hyundai?
- Faulty Engine Control Module (ECM)
- Engine Control Module (ECM) harness is open or shorted
- Engine Control Module (ECM) circuit poor electrical connection
How to Fix the DTC P1642 Hyundai?
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 P1642 Hyundai 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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Frequently Asked Questions about P1642 Hyundai Code
1. What does the OBDII code P1642 mean on a Hyundai?
P1642 indicates an issue with the Engine Control Module (ECM) related to a non-immobilizer or incorrect ECM type being detected.
2. What are the common symptoms of P1642 in a Hyundai?
Common symptoms include the Check Engine Light turning on, starting issues, reduced engine performance, and possible communication errors with the ECM.
3. What causes the P1642 code to appear on a Hyundai?
This code is often caused by an incorrect ECM being installed, a software mismatch, wiring issues, or a malfunction within the ECM itself.
4. Can a faulty ECM trigger the P1642 code?
Yes, a faulty or damaged ECM can be a primary cause of the P1642 code.
5. How do I diagnose the P1642 code on my Hyundai?
Diagnosis typically involves scanning for additional codes, inspecting ECM wiring and connectors, and verifying that the correct ECM type and software are installed.
6. Can a dead battery cause the P1642 code?
While unlikely, a dead or weak battery can sometimes cause communication errors that may contribute to this code appearing.
7. How do I fix the P1642 code on a Hyundai?
Repairs may include reprogramming or replacing the ECM, fixing any wiring issues, or ensuring that the correct ECM type is installed.
8. Is it safe to drive with the P1642 code active?
Driving with this code is not recommended as it may lead to performance issues or prevent the vehicle from starting.
9. How much does it cost to fix a P1642 code on a Hyundai?
Repair costs vary based on the issue but can range from $150 for reprogramming to over $1,000 if the ECM needs replacement.
10. Can I clear the P1642 code without fixing the problem?
You can clear the code temporarily, but it will likely return until the underlying issue is resolved.
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