2007 GTI P0321

Old 02-24-2018, 03:17 PM
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Default 2007 GTI P0321

I have recently installed a new timing belt. I know am getting a code po321. If you drive the car casually(very light acceleration) it runs good and no engine light. As soon as you get about half pedal or more the tach goes crazy the CEP light comes on and the care almost stalls. Any ideas are greatly appreciated. Thanks
Old 02-25-2018, 08:05 AM
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VAG Error Code: 16705/4514/000801

EOBD II Error Code: P0321

Fault Location:
Engine Speed Sensor (G28) - Implausible Signal

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Engine shuts off.
Engine doesn't start.
Tachometer inoperative.
Glow Plug Indicator Lamp (K29) flashes.

Engine Speed Sensor (G28) loose.
Engine Speed Sensor (G28) faulty.

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Check Engine Speed Sensor (G28).
Read Measuring Value Blocks (MVB).

Special Notes:
The Engine Speed Sensor (G28) is also used as a reference sensor for the crankshaft position and correlates with the Camshaft Position (Hall) Sensor Bank 1 (G40) and Camshaft Position (Hall) Sensor 2 Bank 2 (G163).
When found in a VW Golf/Jetta (1J/9M) or Audi A3 (8L) with 1.9l TDI-PD (AXR), check Technical Product Information (TPI) 2007067 which explains issues with electro magnetic interference. A modification to the wiring will fix this problem, extensive details can be found in the named Technical Product Information (TPI). Even though this Technical Product Information (TPI) was originally released for VW Golf/Jetta (1J/9M), a customer of ours came across the same issue on an Audi A3 (8L).
When found in a 2004 VW Golf, Jetta, or New Beetle with 1.9l TDI-PD (BEW), check for Technical Service Bulletin (TSB) 2010461 (01-07-45 formerly 97-05-03) or 201463 (01-07-44 formerly 97-05-04) calling for a flash update to the Electronic Control Unit (ECU) and a secondary ground installation.
VW Vehicles with the Most TSBs

When is the code detected?:
The P0321 code is triggered when the Engine Control Module (ECM) detects the signal is out of range.

Ignition failure sensor is used to check whether the spark ignition is occurred correctly or not and also used to tachometer drive. The sensor monitors the voltage difference between a resistance which is on the battery circuit for ignition coil. When the ignition coil works properly, the electric current through the resistance is detected as voltage drop. This is confirmed for every ignition event with the crankshaft sensor and the camshaft sensor. If Engine Control Module (ECM) detects a malfunction, no ignition is possible, so the engine would not start. If there is no ignition signal for a predetermined cycle for one or two ignition coils, an ignition coil circuit failure exists.

As taken from my new EOBD II Fault Codes Software

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