What are the possible causes of p0123 Mercedes-Benz?
P0123 MERCEDES-BENZ Possible Causes 1 Faulty Accelerator Pedal Position Sensor 2 Accelerator Pedal Position Sensor harness is open or shorted 3 Accelerator Pedal Position Sensor circuit poor electrical connection 4 Faulty Throttle Position Sensor (TPS) 5 Faulty Engine Control Module (ECM) More …
How does the p0123 throttle position sensor work?
The TPS sends the throttle position information back to the PCM on this signal wire. When the throttle is closed the signal is near .45 volts. At WOT (Wide Open Throttle) the TPS signal voltage will approach a full 5 volts. When the PCM sees a voltage that is higher than the normal upper limit, P0123 will set.
What does the OBD code p0123 stand for?
P0123 is the generic OBD-II code which indicates that the Engine Control Module (ECM) has seen the TPS circuit A output voltage go above the sensor’s expected voltage specification range.
What causes an ECM to fail a p0123 code?
Most failures for code P0123 involve a defective TPS sensor, or a connector shorted internally. All TPS codes will cause the ECM to go into the same failure mode; drive symptoms will be roughly the same. Need help with a P0123 code?
What does the p0123 code on the throttle position sensor mean?
What Does the P0123 Code Mean? The P0123 code indicates a problem with the throttle/pedal position sensor. When the engine control module (ECM) detects that the throttle position sensor’s output voltage rating is exceeding the manufacturer specification, it generates the P0123 trouble code.
P0123 MERCEDES-BENZ Possible Causes 1 Faulty Accelerator Pedal Position Sensor 2 Accelerator Pedal Position Sensor harness is open or shorted 3 Accelerator Pedal Position Sensor circuit poor electrical connection 4 Faulty Throttle Position Sensor (TPS) 5 Faulty Engine Control Module (ECM) More
Most failures for code P0123 involve a defective TPS sensor, or a connector shorted internally. All TPS codes will cause the ECM to go into the same failure mode; drive symptoms will be roughly the same. Need help with a P0123 code?
How much does it cost to diagnose the p0123 Dodge code?
The cost of diagnosing the P0123 DODGE code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. When is the P0123 DODGE code detected? The Throttle Position Sensor ( TPS) responds to the accelerator pedal movement.