Santa fe Does anyone know what to do when you get these 3 codes.  P1702- P1703-P0122.  On a 2001 Santa Fe 4 cyl.

This code refers to a misfire on cyl#5. Possible spark plug or ignition coil ( most common ). Could also be an injector or wiring to any of the above

this sounds like a timing belt problem.
http://www.youtube.com/watch?v=nyB6syDyP0o
This is what could happen if not replaced.

On the 3 different engines (4 cyl & both V6s) on LH side (radiator side) below the exhaust manifold. All have two14mm bolts mounting them to the engine.
ILLUSTRATION:

First of all, why was the O2 snsr replaced?... Check Engine light? What DTC (diagnostic trouble code) did you find stored in the ECU (Engine Control Unit)? The drivability you seem to be describing can have multiple causes -- faulty sensors, malfunctioning computer, clogged catalytic converter, leaky injectors, vacuum leaks, etc.

Ok... this is gonna take some time. The 04 Santa Fe came with 3 (three) different/possible engines -- the 4 Cylinder 2.4 lit, the 2.7 V6, and the 3.5 V6. Only the 2.4 (4 cyl) and the 3.5 V6 are equipped with EGR. The 2.7 does NOT have EGR. To answer part of your question, the EGR system on the 4 Cyl is known to develop restriction(s) in the EGR port (from the # 4 cylinder exhaust port to the EGR valve at the intake manifold). This port travels through the head (front to rear, i.e., Left to Right when viewing the engine from the transmission end). This port cannot be seen at the # 4 cylinder exhaust port unless you remove the exhaust manifold.

It would be very helpful if you could provide more detailed/specific information regarding the drivability issue & what/which codes were found related to the Check Engine light.

Do you mean P0301, P0302, etc? Misfire codes? You have 6 plugs, 3 coil packs, and 3 wires. cyl 2,4,6 are the ones in front, with the coil packs. It's possible they're bad.

On your Santa Fe, each spark plug has it's own "coil". the computer sends a signal to the coil at the precise moment that it needs to provide power for the spark plug.

for this and all future questions


http://cgi.ebay.com/ebaymotors/2003-HYUNDAI-SANTA-FE-OWNERS-MANUAL-_W0QQcmdZViewItemQQhashZitem4154f3c5e4QQitemZ280598136292QQptZMotorsQ5fManualsQ5fLiterature

Check plug wires for a short

Here is the site.
http://www.pdfee.com/2002-hyundai-santa-fe-gl.html

First of all, the particular vehicle you describe (2003 Santa Fe) came with three different engines (the 2.4 (4 cyl), the 2.7 (6 Cyl) and the 3.5 (6 cyl). Which one is it? NOW!.. Which belt are you talking about?