P1173 Diagnostic Trouble Code

P1173 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 P1173 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
Reduction in engine performance, especially at low RPM levels

Possible Causes :

Dirty air cleaner element Damaged DPF
A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

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. 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 P1173 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 P1173.

Fortunately, P1173 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1173 Trouble Code For Specific Cars

P1173 Lola Gt Timing Reference High Resolution Signal B Malfunction
P1173 Gmc Envoy Park Brake Actuator Assembly Switch Circuit Failure
P1173 Chevrolet Tahoe Electronic Throttle Monitor Data Available
P1173 Mercury Park Lane Air Suspension Rear Inflator Solenoid Output Circuit Short To Ground
P1173 Maserati 300 Transmission Clutch Interlock Safety Switch Short Circuit To Ground
P1173 Jensen Cv8 Seat Driver Recline Forward Switch Circuit Open
P1173 Buick Allure Cylinder 5 Injector Circuit High