P1677 Trouble Code

View P1677 obd/2 error code description and symptoms. P1677 engine photo

Throttle Position (TP) Sensor Intermittent The TP sensor circuit is monitored by the PCM for sudden TP rotation angle (or voltage) input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON engine running the PCM detects a TP rotation angle (or voltage) changes beyond the minimum or maximum calibrated limit, a continuous diagnostic trouble code (DTC) is stored. Poor continuity through the TP sensor connectors Poor continuity through the TP harness Intermittent open or short inside the TP sensor While accessing the TP V PID on the scan tool, lightly tap on the TP sensor or wiggle the TP sensor connector and harness.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

P1677 Error Code Repair Process :

If your scp (j1850) single ended (+) circuit failure 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 P1677 and engine control unit are in charge of monitoring a bunch of different scp (j1850) single ended (+) circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

P1677 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P1677

A common cause of code P1677 is the failure of SCP (J1850) Single Ended (+) Circuit Failure, but there are several other possible causes as well, such as ;

Damaged VCT phaser
Faulty Variable Camshaft Timing (VCT) position solenoid
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Incorrect fuel pressure

P1677 Trouble Code

P1677 Error Code Repair Process :

Common Causes of P1677

P1677 code for all cars