B1342 Diagnostic Trouble Code

B1342 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 B1342 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
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.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code B1342 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 B1342.

Fortunately, B1342 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1342 Trouble Code For Specific Cars

B1342 Peugeot 1007 Dual Alternator Upper Fault
B1342 Italdesign Formula
B1342 Morris Ital Brake Pressure Switch Mechanical Failure
B1342 Ferrari 159 Injector Control Pressure Not Detected During Crank
B1342 Heuliez Pregunta Passenger's Seat Occupied Switch Circuit Short to Ground
B1342 Citroen Mini-zup Fuel Pump Monitor Circuit Low Input
B1342 Peugeot Quadricycle Engine Coolant Temperature Circuit Malfunction