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Opel Vectra-C & Zafira-B Z19DT DTC P0340 & Bad Start Fix Procedure
18-09-2014, 13:30 PM,
Post: #1
KOpel  Opel Vectra-C & Zafira-B Z19DT DTC P0340 & Bad Start Fix Procedure
Hi all! I want to share with you a common problem on this engine.

Vehicle comes to garage with check light on and bad start symptoms.

On diagnose appears: Fault P0340 - Camshaft Position Sensor A Circuit (Bank 1)

Check with oscilloscope signals of camshaft position sensor and crankshaft position sensor and see the problem...

[Image: 34qwqhd.jpg]

See on detail:

[Image: 6hm9nr.jpg]

This is a good one, the gap of camshaft position sensor it's just at PMS:

[Image: 2zrgxzl.jpg]

The problem is on crankshaft pulley:

[Image: 2vsp09c.jpg]

A good one looks like this:

[Image: 56363451x.jpg]

This is my first post full of images! If anything is wrong don't blame me please... whew

Cheers enjoy
Reputation: +3 - autost [+1] , okolo [+1] , arvydom [+1]
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[+] 14 users say Thank You to cangrenoso for this post
17-05-2015, 09:34 AM,
Post: #2
RE: Opel Vectra-C & Zafira-B Z19DT DTC P0340 & Bad Start Fix Procedure
Hello, thank you for posting this. Got exactly the same problem.
Can it be caused by bad dmf, because this car also had a bad dmf.
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05-12-2015, 18:33 PM, (This post was last modified: 18-04-2017, 21:55 PM by volavka.)
Post: #3
RE: Opel Vectra-C & Zafira-B Z19DT DTC P0340 & Bad Start Fix Procedure
I've also had this problem many times cam shaft sensor fault nipple snapped off inner crank pulley be sure not to air gun bottom bolt back in as causes nipple to CK again hand tighten and torque to specification
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05-01-2018, 17:19 PM,
Post: #4
RE: Opel Vectra-C & Zafira-B Z19DT DTC P0340 & Bad Start Fix Procedure
Hi, i have same problem, new sensor, the camshaft puley is ok, the timing ok
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