P176B Diagnostic Trouble Code

P176B 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 P176B diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Some aftermarket accessories and performance modifications

Repair Processes :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code P176B 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 P176B.

Fortunately, P176B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P176B Trouble Code For Specific Cars

P176B Citroen Xanae Fuel Rail Pressure Sensor Circuit Intermittent
P176B Mazda Mazdaspeed Turbocharger Boost Sensor A Circuit Range/Performance
P176B Riley 2.5 Hood Switch Circuit Short To Battery
P176B Triumph Italia PATS Is Disabled (Check Link Between PATS And Transponder)
P176B Acura Mdx ABS Hydraulic Pump Motor Circuit Short To Ground
P176B Honda S2000 Rear Wiper Select Switch "B" Short to Ground
P176B Lutzmann Lutzmann Traction Control Valve LF Circuit Open