B1700 Diagnostic Trouble Code

B1700 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 B1700 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code B1700 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 B1700.

Fortunately, B1700 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1700 Trouble Code For Specific Cars

B1700 Maserati Karif Transmission Fluid Pressure Sensor/Switch E Circuit High
B1700 Land Rover Evoque Steering Phase B Circuit Short To Ground
B1700 Dodge Dakota Ignition Coil I Primary/Secondary Circuit Malfunction
B1700 Mercedes-benz 450 Air Bag Safing Sensor Output Circuit Open
B1700 Mazda 5 Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery
B1700 Wiesmann Roadster
B1700 Mazda Demio 3 Transmission Transfer Case Shift Motor Short Circuit To Ground