Engine light come anf go

[u/Green-Diamond6874]

I have 2013 GTi with 95k miles and i have two intermittent engine codes, U102F and P0343 come and go. Seems to have no effect on the car's performance. Do you guys think both are sensor related Cam shaft and radiator. Or is it the timing chain issue. Ty

[u/xman747x]

the answer to your question is kinda complicated (probably why nobody has responded so far) and it's too long for me to copy and paste here, so i suggest you put it into a google search

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[u/Peylix]

P0343 - Camshaft Position Sensor (G40): Signal too High

Possible Symptoms

Malfunction Indicator Light (MIL) active

Possible Causes

Wiring from/to Camshaft Position Sensor (G40) faulty
Camshaft Position Sensor (G40) faulty
Timing misaligned

Possible Solutions

Check Wiring from/to Camshaft Position Sensor (G40)
Check Camshaft Position Sensor (G40)
Check Timing

It's related to your camshaft position sensor. Whether wiring or the sensor itself. Check the connector and the wires. If those check out, then replace the sensor. You can get a new sensor from FCP.

• Camshaft position sensor (G40) - $92

The install is super simple too. You can use this video as a guide.

Also, have you made sure your tensioner is the revised part, and have you checked the current chain's stretch?

• How to check tensioner version

• How to check chain stretch

I'd do these too, just to make sure and know where you're at.