fault code p1593

[rudge]

Hi all i have been chasing this fault for sometime firstly the code was for inlet camshaft solenoid so i swapped them over but the fault remained on the inlet solenoid . next port of call is the wiring so checked for resistance now bare with me i am new to this so green wire on solenoid 0 on both inlet and exhaust now i think it was a red wire on both 4.2 With regards to the code 1593 it says it maybe disa valve i have removed this and seems to function well.Does anyone have any thoughts on this fault.many thanks

 

[Rudyrov]

Did you clear the code after your swap?

 

[rudge]

Did you clear the code after your swap?

Yes but just came back again. I think i may have to get a bmw specific tool to see if i can get in more detail of the fault.The car starts and idles ok but give it some gas and it bogs down and you can smell the fuel.

 

[Rudyrov]

From Google;

AI Overview

BMW fault code P1593 typically indicates an issue with the VANOS system and can be caused by improper camshaft timing or a sensor failure. This code can also relate to an open ground line. Replacing the VANOS solenoids often resolves this problem.

Possible Causes

• VANOS System Malfunction: The code often points to a problem with the Variable Nockenwellen Steuerung (VANOS), which controls camshaft timing.
  
  
• Sensor Failure: A failed sensor can also trigger this code.
  
  
• Open Ground Line: An open circuit in the ground line can cause the fault.
  

Symptoms

• Improper Camshaft Timing: The most common symptom is incorrect camshaft timing.
• Fluctuating Tachometer: The engine's tachometer may show inconsistent readings.

Solutions

• Replace VANOS Solenoids: In many cases, replacing the VANOS solenoids will fix the issue and clear the P1593 code.
  
  
• Inspect Ground Lines: Check the ground lines for any breaks or issues.
  
  
• Diagnose Sensors: Perform diagnostics on the associated sensors to identify and replace faulty ones.
  

Note: For a proper diagnosis and to confirm the exact cause, it's best to have a BMW technician use a professional diagnostic tool to read the fault code and perform relevant checks.

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• OBD II Fault Codes p1593
  OBD II Fault Code P1593 : * Sensor failure. * Ground line open.
  
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