Conscisior

So I’ve sent the ECU away to get checked and they have determined that nothing is wrong with the ECU. I have since checked the throttle pedal and old fuel rail pressure sensor. Both seem to have less than 1ohm resistance across the pins. I don’t have a scooby about what caused these sensors to all fail simultaneously. I’m gutted. It seems I’m going to have to replace the actuators on the turbo and egr and the throttle pedal. It’s seeming likely I’ll be fixing these, replacing the timing belt and water pump and selling her .

All the connectors related to the affected sensors and ecu have been checked for corrosion and damage. No issues have been found. We checked this when we were testing the sensors for internal resistance and 5v references to sensors. I have read that EGR’s tend to fill with water but I have had the connector off and used a mirror to inspect the female side and tested the input voltages and signal voltages to/from them.

Had an afternoon of double checking and triple checking everything. VCDS showed nothing that we didn’t already know. All wires intact and solid. We replaced the Fuel Rail Pressure Sensor which was showing - High input (Short to B+). We tested the internal resistance of the sensor between the signal and 5V+ which showed 0.6ohms whereas the new sensor showed 1ohms. Once the sensor was replaced the Fuel Rail Pressure Sensor the P0193 code cleared. As has the P2100 and P0123’s with a new throttle body. It seems that most of the sensors on this A circuit have been shorted to 12V+ in a scenario where no wires have rubbed through. I have bit the bullet and sent the ECU away for analysis and repair (if needed) in hopes that the ECU has faulted and caused this short. In any event I can see myself having to replace the electronic actuator on the turbo and the EGR. I will post an update once I find out about the condition of the ECU.

Thanks for the advice and your own input. I tried the following: my machine (TopDon Artidiag) and the works Snap-On Solus and Autel MK808BT and all show the same codes. I have a friend who lives 3hrs away coming up Sunday who has VCDS -which may show a lot more data at time of fault. I have checked all but the EGR Plug as it’s difficult to reach. I have heard these can fill with water and corrode so I will try check this tonight. I had the back of the ECU last night checking connectors for water damage and checking pins for play. As I said another pair of hands coming on Sunday to show some light to the situation hopefully. Failing this I will be sending it to an Auto Electrician. Thanks for the input, really helps me to have someone else’s input to get the cogs running 😂

Hi, I have a Mk2 2011 Skoda Octavia Scout 2.0Tdi 4x4 for around 10 months. Its had a few issues previously with the P0651 (Sensor Reference Voltage B Circuit Open) code which resulted in the replacement (carried out by myself) of the following: Throttle body unit (calibrated after install) Throttle pedal High Pressure fuel sensor The issue I have right now started from hitting a pothole, I was shown the flashing glowplug lamp and then put into limp mode. I pulled over and scanned the code which was a P0651. As I have had this code read out before, I went to the throttle body and unplugged it and the P0651 code went away - this resulted in the following codes appearing: P0193 - Fuel Rail Pressure Sensor 'A' Circuit - High Input P0405 - EGR Sensor 'A' Circuit Low P2127 - Throttle/Pedal Pos Sen/Switch E Circuit Low Input P2100 - Throttle Actuator Control Motor Circuit Open P0123 - Throttle/Pedal Pos Sen/Switch A Circuit High P2563 - Turbocharger Boost Control Pos Sen Circuit Range/Performance I have gone into the process of testing for input voltages, grounds and Resistance amongst the wires. I have inspected the plugs for the Fuel Rail Pressure Sensor, Throttle Body & Turbo Boost Control Solenoid as they are the easiest to access. I am now currently thinking this may be an ECU Malfunction, I will be jacking the car up and accessing the EGR plug to check its values in the coming days. I should also add, when i plug the throttle body back in, all of the 6 codes listed above disappear and the P0651 returns. Any one have any ideas to what may be causing this or what next plan of action to take? Thanks in Advance.

Hi guys, brand new to Skoda ownership and have just bought a 2011 Octavia Scout, had it for around 500miles and last night I got the following code pop up. This is accompanied with the glow plug light on at all times. The vehicle is now in limp mode, with only 3k revs available. It is harder to start and also turns off with a large clunk. I have read a few forum posts relating to this error on this engine and they point to a fault in the EGR Valve which develop condensation and corrode. The weather in Aberdeen has been very wet and cold, some floods and large puddles that have been taken carefully. I have bought the Haynes manual and have a procedure to follow to test the EGR Solenoid, pins and wires to the ECU. I will be testing this tomorrow. I had it on a drive today to gather data and the EGR Duty was at 0% and the Valve duty was at 81% consistently during the drive. (I am assuming the valve is stuck open?) I am just wanting to know if this is a common issue, or have I jumped the gun with seeing EGR fault online and chasing the wrong area.