Regarding Honda cars, the P1659 Code can be a real headache. Honda P1659 code is seen when the Electronic Throttle Control System (ETCS) Control Relay is OFF. Common causes of such malfunctions can range from blown fuses, poor connections, or loose terminals at the under-hood fuse/relay box, “open” or “short” wires between the PCM and the under-hood fuse/relay box, faulty right side engine compartment wire harness, faulty relay control module, outdated PCM software, and a faulty PCM. Troubleshooting the issue can be tricky and time-consuming, but with the right knowledge and tools, the problem can be resolved.
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Causes and Solutions for Honda P1659 Code
| Cause | Solution |
|---|---|
| Blown fuse | Replace the blown fuse and check for proper connection. |
| Poor connections or loose terminals | Check the link and make sure the airports are tight. |
| “Open” or “Short” in the wire | Check the wire and ensure that the connection is secure. |
| Faulty Right Side Engine Compartment Wire Harness | Replace the defective wire harness. |
| Faulty Relay Control Module | Replace the faulty relay control module. |
| PCM needs to be updated with the latest software | Update the PCM with the latest software. |
| Faulty PCM | Replace the faulty PCM. |
Blown Fuse
When the Honda P1659 Code appears, one of the first things to check is the fuse. If the fuse is blown, it can cause the ETCS Control Relay to be OFF. The blown fuse must be replaced to fix this issue, and the connections must be checked for proper contact.
Poor Connections or Loose Terminals
If the connections or terminals at the under-hood fuse/relay box are loose, it can also cause the Honda P1659 Code to appear. The links must be checked to resolve this issue, and open terminals must be tightened.
“Open” or “Short” in the Wire
The Honda P1659 Code can also be caused by an “open” or “short” in the wire between the PCM and the under-hood fuse/relay box. To fix this issue, the wire must be checked, and the connection must be ensured secure.
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Faulty Right Side Engine Compartment Wire Harness
A faulty right-side engine compartment wire harness can cause the Honda P1659 Code. If so, the defective wire harness must be replaced to resolve the issue.
Faulty Relay Control Module
A faulty relay control module can also cause the Honda P1659 Code. If this is the issue, the defective relay control module must be replaced to fix the problem.
PCM needs to be updated with the latest software
If the PCM needs to be updated with the latest software, the Honda P1659 Code can appear. The PCM must be updated with the newest software to resolve this issue.
Faulty PCM
A faulty PCM can also cause the Honda P1659 Code. If so, the faulty PCM must be replaced to resolve the issue.
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Conclusion
The Honda P1659 Code can be a real headache. It can be caused by various issues such as a blown fuse, poor connections, loose terminals, “open” or “short” wires, faulty right side engine compartment wire harness, faulty relay control module, outdated PCM software, and a faulty PCM. With the right knowledge and tools, troubleshooting the Honda P1659 Code can be done efficiently and effectively.