Toddster900
New member
- Location
- Inverness
- Car(s)
- Mk7 Golf GTD
First post on this site so hi everyone and keep up the great work!
When accelerating hard with a cold engine my glow plug warning light starts to flash and the car goes into limp mode. Switching the ignition off and back on clears the warning light and the car runs fine again. Once its hot this does not happen.
Fault code P164B00 Oil Pressure Switch Mallfunction is activated following the fault. I did a bit of research and it appears there are two oil pressure switches. One located on the end of the block next to the air filter and one on the front of the block under the intake intercooler. As I was not sure which one was which or which one was causing the issue I shorted them one at a time with the engine stopped and the ignition on.
The one on the end of the block returned the code P164C00 Reduced Oil Pressure Switch Implausible Signal.
The one on the front of the block returned the code P164A00 Oil Pressure Switch Implausible Signal.
I then disconnected the one on the end of the block and started the engine which returned the code P164D00 Reduced Oil Pressure Switch Malfunction.
From this I am pretty confident my fault is being caused by the high pressure switch on the front of the block. I plan to change the switch but just wanted to see if anyone had seen these symptoms before and if anyone can explain why it only happens when cold. Could it be to do with cold oil reaching a higher pressure or a cold switch switching at a lower pressure?
Any input appreciated!
When accelerating hard with a cold engine my glow plug warning light starts to flash and the car goes into limp mode. Switching the ignition off and back on clears the warning light and the car runs fine again. Once its hot this does not happen.
Fault code P164B00 Oil Pressure Switch Mallfunction is activated following the fault. I did a bit of research and it appears there are two oil pressure switches. One located on the end of the block next to the air filter and one on the front of the block under the intake intercooler. As I was not sure which one was which or which one was causing the issue I shorted them one at a time with the engine stopped and the ignition on.
The one on the end of the block returned the code P164C00 Reduced Oil Pressure Switch Implausible Signal.
The one on the front of the block returned the code P164A00 Oil Pressure Switch Implausible Signal.
I then disconnected the one on the end of the block and started the engine which returned the code P164D00 Reduced Oil Pressure Switch Malfunction.
From this I am pretty confident my fault is being caused by the high pressure switch on the front of the block. I plan to change the switch but just wanted to see if anyone had seen these symptoms before and if anyone can explain why it only happens when cold. Could it be to do with cold oil reaching a higher pressure or a cold switch switching at a lower pressure?
Any input appreciated!