P1757 Diagnostic Trouble Code

P1757 is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a P1757 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
Hesitation upon acceleration

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code P1757 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P1757.

Fortunately, P1757 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1757 Trouble Code For Specific Cars

P1757 Pierce-arrow Raceabout Engine Over Speed Condition
P1757 Toyota Trd Passenger Power Window Motor Circuit Open
P1757 Toyota Mrj Output Speed Sensor No Signal
P1757 Chevrolet Xp Engine Coolant Temperature Circuit Malfunction
P1757 Nissan Xterra Cylinder #7 High To Low Side Open
P1757 Sbarro Ionos Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector)
P1757 Clan Crusader Fuel Rail/System Pressure - Too High