C3527 Diagnostic Trouble Code

C3527 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 C3527 diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Some aftermarket accessories and performance modifications

Repair Processes :

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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. 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 C3527 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 C3527.

Fortunately, C3527 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3527 Trouble Code For Specific Cars

C3527 Toyota Proace Park Brake Actuator Assembly Switch Released Circuit Short to Gnd
C3527 Chrysler Chronos Engine RPM Or Speed Limiter Reached
C3527 Buick Reatta Cylinder head over temp sensed
C3527 Gmc Savana Park Brake Applied Warning Lamp Circuit Short To Battery
C3527 Mazda Etude Transponder Programming Failed
C3527 Daihatsu Freeclimber Gear Shift position short to battery
C3527 Chevrolet Kalos Dynamic Stability Control Valve RF Circuit Failure