C1628 Diagnostic Trouble Code

C1628 is a kind of OBD-II Diagnostic C-Chassis 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 C1628 diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Some aftermarket accessories and performance modifications

Repair Processes :

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. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code C1628 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 C1628.

Fortunately, C1628 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1628 Trouble Code For Specific Cars

C1628 Ferrari 342 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage
C1628 Abarth Grande Punto A/C Clutch Magnetic Control Circuit Failure
C1628 Spyker C8 Lamp Dome Input Circuit Short To Battery
C1628 Mikasa Sports ANTI THEFT HORN OUTPUT CIRCUIT Short to Batt
C1628 Ac 16 A/C Refrigerant Temperature Sensor/Circuit Malfunction
C1628 Innocenti 950 SCP (J1850) Invalid or Missing Data for Function Read Fuel System
C1628 Toyota Aygo O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)