P1790 Trouble Code

View P1790 obd/2 error code description and symptoms. P1790 engine photo

Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50 C (-58 F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness Sensor signal short to power Damaged PCM Improper harness connection Damaged sensor ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

P1790 Error Code Repair Process :

The rule of P1790 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of p1790 tp (mechanical) circuit malfunction. Likewise, overriding the OBD P1790 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

P1790 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 P1790

A common cause of code P1790 is the failure of P1790 TP (Mechanical) Circuit Malfunction, but there are several other possible causes as well, such as ;

Engine Control Module (ECM)
Continuous oil flow to the VCT piston chamber
Faulty Variable Camshaft Timing (VCT) position solenoid
Variable Camshaft Timing (VCT) position circuit poor electrical connection

P1790 code for all cars

You can view according P1790 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P1790 Alfa Romeo 20

+P1790 Fiat Vivace

+P1790 Audi C

+P1790 Oldsmobile Custom Cruiser

+P1790 Mercedes Vaneo

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

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