Search engine trouble codes.
Example: P0120
P1785 Audi A4 engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution.
Brief explanation of the P1785 Audi A4 code and definition of P1785 Audi A4 is the bottom side.
| p |
Powertrain Code Problem is related engine, transmission and emissions systems. |
| 1 | MFG - Manufacturer Specific |
| 7 | Auxiliary Emission Controls |
| 8 | Exhaust Gas Recirculation System Valve 1 |
| 5 | Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit |
MFG - Manufacturer Specific codes, which have a '1' as their second digit to indicate they are unique to a particular vehicle make or model. These special codes were deemed necessary by the vehicle manufacturers so they could provide additional diagnostic information beyond the basic list of generic OBD II codes for all kinds of faults, not just emissions-related faults.
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How To Fix P1785 Audi A4 ?
Regarding the P1785 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. |
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P1785 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired. When you see P1785 Audi A4 engine fault code on your engine code reader this description will help you.
| P Codes | List of all Powertrain codes. |
Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the P Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.
BE CAREFUL !
This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.
