Answer
Feb 13, 2025 - 12:05 PM
Hello there!
Alright, so P1359 is a Crankshaft Position Sensor (CPS) malfunction code, but since your B20B swap doesn’t have a CPS, the ECU is freaking out because it's looking for a signal that doesn’t exist.
Your P75 ECU (from an LS Integra) wasn't designed for a crank sensor either, but if someone repinned or modified the wiring, that could trigger the code. Here’s what you can do:
1.) Check the Wiring: Look at the harness near the distributor and see if any cut wires were part of a CPS circuit. If something was spliced wrong, it could be sending a false signal.
2.) Use a Non-OBD2 ECU: If you’re running an OBD2 P75 ECU, consider switching to an OBD1 P75 and chipping it. OBD1 doesn’t look for a CPS, so that would clear the code permanently.
3.) Get a Custom Tune: If you're sticking with OBD2, a custom tune (like a Hondata S300 on an OBD1 conversion) can disable the CPS check-in software.
4.) Try a Different Distributor: Some swaps run into this because the distributor type matters. A 96-99 LS distributor should work without a crank sensor input.
If the car runs fine and you just want the light gone, a tune is the cleanest way. Otherwise, double-check that the wiring isn’t tripping the ECU into thinking something is wrong.
If you’re not comfortable performing these steps yourself, consider consulting with a mechanic familiar with Honda swaps who can assist with proper wiring and diagnostics.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck, and we hope you get your Integra running smoothly again!
Alright, so P1359 is a Crankshaft Position Sensor (CPS) malfunction code, but since your B20B swap doesn’t have a CPS, the ECU is freaking out because it's looking for a signal that doesn’t exist.
Your P75 ECU (from an LS Integra) wasn't designed for a crank sensor either, but if someone repinned or modified the wiring, that could trigger the code. Here’s what you can do:
1.) Check the Wiring: Look at the harness near the distributor and see if any cut wires were part of a CPS circuit. If something was spliced wrong, it could be sending a false signal.
2.) Use a Non-OBD2 ECU: If you’re running an OBD2 P75 ECU, consider switching to an OBD1 P75 and chipping it. OBD1 doesn’t look for a CPS, so that would clear the code permanently.
3.) Get a Custom Tune: If you're sticking with OBD2, a custom tune (like a Hondata S300 on an OBD1 conversion) can disable the CPS check-in software.
4.) Try a Different Distributor: Some swaps run into this because the distributor type matters. A 96-99 LS distributor should work without a crank sensor input.
If the car runs fine and you just want the light gone, a tune is the cleanest way. Otherwise, double-check that the wiring isn’t tripping the ECU into thinking something is wrong.
If you’re not comfortable performing these steps yourself, consider consulting with a mechanic familiar with Honda swaps who can assist with proper wiring and diagnostics.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck, and we hope you get your Integra running smoothly again!
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