P1211 Diagnostic Trouble Code

P1211 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 P1211 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

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. 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 P1211 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 P1211.

Fortunately, P1211 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1211 Trouble Code For Specific Cars

P1211 Citroen Gs Fuel Level Sensor Circuit Range/Performance
P1211 Saturn Ls Immobilizer ID Does Not Match
P1211 Ram 1500 Fuel Temperature Sensor A Circuit Performance
P1211 Dkw F91 Idle Switch (Electric Control Throttle) Circuit Malfunction
P1211 Hyundai Centennial SBDS Interactive Codes
P1211 Aston Martin 2-litre Air Suspension RF Height Sensor Circuit Failure
P1211 Citroen 15cv Fan Secondary Low with Low Fan On