2003 Mustang Cobra Diablo Delta chip error code help

Tony Baloney · 07-16-2008

Hello everyone. I'm new to the forum and hope you can help me. I have an '03 Cobra with a Diablo Delta 3 stage chip giving me a 'check engine light" with an error code of P1633. This has translated to 'low maintenance voltage'. The folks at Ford tell me this is because the ECU can't keep up with the added performance.

All I want to do is turn the check engine light off. How does one do this if it is possible?

The tech at Diablo tells me I need to re-burn the chip. This doesn't sound right.

Any ideas?

Thank you so much

Tony

**stlwagon** · 07-16-2008

Welcome... The 1633 is a problem with the KAPWR circuit. It's sensing a low voltage condition. You can clear it but it will likely keep coming back.