U1257 Dodge Mirada OBD Code

OBD/2 U1257 error code description and symptoms.

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

U1257 Dodge Mirada Error Code Repair Process :

If your pressure control solenoid c intermittent short check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U1257 and engine control unit are in charge of monitoring a bunch of different pressure control solenoid c intermittent short, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Dodge Mirada U1257 OBD2 Code

A common cause of code U1257 is the failure of Pressure Control Solenoid C Intermittent Short, but there are several other possible causes as well, such as ;

Camshaft Position Sensor harness is open or shorted
EVAP system hose leaking
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Fuel pressure

U1257 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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U1257 Dodge Mirada OBD Code

U1257 Dodge Mirada Error Code Repair Process :

Common Causes of Dodge Mirada U1257 OBD2 Code

U1257 code for other Dodge cars