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P0340 error on 156 GTA
Hi. My friend has a 156 GTA and recently it started to run in limp mode. It is hard to start, doesn’t rev above 3500rpm and is REALLY thirsty. When hooked up on a PC, an P0340 error showed up. It is "cam angle sensor circuit malfunction".
- Sensor was replaced with a new one - it didn’t help
- Cables were checked they are all ok from ECU to the sensor
There is one thing that is not clear, the sensor has 3 pins. + Voltage, ground, sensor data. On the + voltage cable from ECU, there is 5V. Some people in Alfa service say it should be +5, some say +12. We checked 166 3,0V6 and it has +12V.
Does anybody know what voltage should be on 156 GTA cam angle sensor?
Considering the sensor and wiring are OK, any idea about possible fault?
Under the line question:
Why a V6 is using cam angle sensor? Cam timing is fixed, not variable like on TS engine. The cam angle might change only if timing belt snaps so why the sensor is there???
147 1.6TS (2002) Nerro, Beige Interior, 17" OZ Ultraleggera wheels + Potenza RE050, Billstein B8 dampers + H&R -35mm springs, Galfer Extreme Brake kit, ECU remap, Variable intake manifold, Custom made stainless steel exhaust manifold, 100cell racing cat, straight SS center section with resonator, Supersprint back-box, GTA spoiler, Lester GTA side skirts, GTA/Ti headlights, Blaupunkt Los Angeles MP74 + Focal Polyglass 165V2 (front) + MacAudio DVD 2.16 (rear) + Dynamat + custom fit HERZ subwoofer
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