C1699 Diagnostic Trouble Code

C1699 is a kind of OBD-II Diagnostic C-Chassis 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 C1699 diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. 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. 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 C1699 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 C1699.

Fortunately, C1699 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1699 Trouble Code For Specific Cars

C1699 Maybach 62 Transmission Slip Error
C1699 Porsche Rsk Fuel Pump Speed Primary Circuit Malfunction
C1699 Datsun Z HO2S Heater Control Circuit High (Bank 2 Sensor 1)
C1699 Lifan X60 Throttle Control Unit Throttle Position Malfunction
C1699 Mazda 626 Transmission Transfer Case Contact Plate 'D' Short Circuit To Ground
C1699 Pontiac Torrent Four Wheel Drive (4WD) Switch Circuit Range/Performance
C1699 Aston Martin Dbs Air Suspension RR Height Sensor Circuit Short To Ground