P1232 Diagnostic Trouble Code

P1232 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 P1232 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P1232 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 P1232.

Fortunately, P1232 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1232 Trouble Code For Specific Cars

P1232 Ginetta G2 Oil Pressure Control Solenoid Circuit Malfunction
P1232 Lancia Voyager Starter Motor Circuit Failure
P1232 Seat Formula Injector Control Circuit
P1232 Cadillac Imaj Decklid Release Circuit Short To Ground
P1232 Ford Triton Misfire Rate Catalyst Damage Fault - Bank 1
P1232 Ferrari F355 Intermediate Speed Sensor (ISS) Malfunction
P1232 Dutton B-plus IMRC Input Error (Bank 2)