C0211 Diagnostic Trouble Code

C0211 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 C0211 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
Poor acceleration

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

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. 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 C0211 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 C0211.

Fortunately, C0211 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0211 Trouble Code For Specific Cars

C0211 Peugeot 4008 EGR No Flow Detected
C0211 Osca 2500 Door Unlock Disarm Output Circuit Failure
C0211 Ds Ds7 Crossback Ignition/Distributor Engine Speed Input Circuit Range/Performance
C0211 Aston Martin Db2 Air Suspension RR Air Spring/Shock Solenoid Output Circuit Failure
C0211 Subaru Xt MAF Ground Malfunction
C0211 Daihatsu Terios 2 Glow Plug/Heater Indicator Circuit Malfunction
C0211 Cadillac Solitaire Dim Panel Increase Input Circuit Short To Ground