B3029 Diagnostic Trouble Code

B3029 is a kind of OBD-II Diagnostic B-Body 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 B3029 diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. 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. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code B3029 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 B3029.

Fortunately, B3029 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3029 Trouble Code For Specific Cars

B3029 Chevrolet Orlando EGRCHK Solenoid Circuit Malfunction
B3029 Peugeot 508 Ii ELC System 2 Fault
B3029 Hyundai Solaris SCP (J1850) Invalid or Missing Data for EEC Programming
B3029 Renault Racoon Heated Windshield Input Short to Ground
B3029 Cottin-desgouttes 12 Fuel Shut Off Solenoid Malfunction
B3029 Vauxhall Monaro Pressure Control Solenoid B Intermittent
B3029 Ford Fpv Mirror Driver Drive Circuit Failure