P0697 Diagnostic Trouble Code

P0697 is a kind of OBD-II Diagnostic P-Powertrain 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 P0697 diagnostic trouble code may include:

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

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code P0697 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 P0697.

Fortunately, P0697 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0697 Trouble Code For Specific Cars

P0697 British Salmson 12 Crankshaft Position Sensor B Circuit Malfunction
P0697 Bugatti Type 43 Cylinder 11 Contribution/balance Fault
P0697 American Limousine Air Suspension Height Sensor Power Circuit Open
P0697 Metropolitan 1200 Air Suspension RF Height Sensor Circuit Short To Battery
P0697 Fiat 3.5 Lamp Adaptive Damping Warning Circuit Failure
P0697 Innocenti J4 SCP (J1850) Invalid or Missing Data for Interior Environment
P0697 Fiat 507 Lamp Backup Switch Input Circuit Open