P1462 Diagnostic Trouble Code

P1462 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 P1462 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
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.
An air leak forward of the DPF will change the sensor readings resulting in the code

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 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. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code P1462 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 P1462.

Fortunately, P1462 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1462 Trouble Code For Specific Cars

P1462 Renault Fuego Glow Plug Circuit High Input (Bank #2)
P1462 Pontiac Gpx Exhaust Valve Control Solenoid Circuit Low (Bank 1)
P1462 Ford Tickford Mirror Switch Assembly Circuit Failure
P1462 Bugatti Type 35 Cylinder 10 Contribution/balance Fault
P1462 Lamborghini P140 Solenoid Relay # 1 Circuit Failure
P1462 Wartburg 312
P1462 Vauxhall Frontera Pressure Control Solenoid A Control Circuit High