C1287 Diagnostic Trouble Code

C1287 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 C1287 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
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

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.
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 :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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.

Process Tips

Diagnostic trouble code C1287 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 C1287.

Fortunately, C1287 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1287 Trouble Code For Specific Cars

C1287 Renault Wind HO2S Heater Resistance (Bank 1 Sensor 1)
C1287 Datsun 1200 Heater Coolant Temp sensor circuit Short to GND
C1287 Delahaye Coupe Hydraulic Pressure Sensor Circuit Low Input
C1287 Bugatti Type 43 Cylinder 11 Contribution/balance Fault
C1287 Chrysler Wimbledon Exhaust Valve Control Solenoid C ircuit High (Bank 1)
C1287 Rochet-schneider 25 Hydraulic Pressure Sensor Circuit Intermittent
C1287 Renault Clio Gear Shift Lock Solenoid Circuit Range/Performance