P1654 Diagnostic Trouble Code

P1654 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 P1654 diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
Poor fuel economy

Possible Causes :

Faulty IMRC actuator/sensor
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Dirty air cleaner element Damaged DPF

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look at the plug wires to make sure they are not burnt or laying on the exhaust. 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.

Process Tips

Diagnostic trouble code P1654 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 P1654.

Fortunately, P1654 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1654 Trouble Code For Specific Cars

P1654 Tatra T87 Mirror Switch Reference Voltage Positive Common Open Circuit
P1654 Paramount Ten Driver Side Crash Sensor Internal Fault
P1654 Mercedes S 420 Air Assist Control Valve Range/Performance
P1654 Ac Acedes-magna ABS Fluid Dumping Exceeds Maximum Timing
P1654 Citroen Ds Fuel Level Sensor B Circuit High
P1654 Mg Rover Air Temperature External Sensor Circuit Failure
P1654 Oldsmobile Cutlass Cylinder 8 Injector Circuit High