C0089 Diagnostic Trouble Code

C0089 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 C0089 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 :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code C0089 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 C0089.

Fortunately, C0089 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0089 Trouble Code For Specific Cars

C0089 Raymond Mays 20 Fuel Volume Regulator Control Circuit High
C0089 Mg Magnett Air Suspension RR Vent Request Exceeded Max Timing
C0089 Abarth Simca A/C pressure sensor circuit voltage low
C0089 Plymouth Vip Exhaust Gas Recirculation Flow Malfunction
C0089 Morris Twelve Cam Sensor Fault
C0089 Audi A1 Ambient Air Temperature Sensor Circuit Intermittent
C0089 Porsche 917 Fuel Composition Sensor Circuit Range/Performance