P1065 Diagnostic Trouble Code

P1065 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 P1065 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 :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code P1065 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 P1065.

Fortunately, P1065 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1065 Trouble Code For Specific Cars

P1065 Chevrolet Half Ton Dual Alternator Lower Fault/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
P1065 Nissan Pintara Cooling Fan Driver Fault
P1065 Land Rover Discovery 3 Steering EVO Out-of-Range Fault
P1065 Maxwell Model L Transmission Range Sensor Circuit Range/Performance
P1065 Turner 1500 Pedal Position Sensor B Circuit Intermittent
P1065 Caterham Seven S3 Door Driver Set Switch Stuck Failure
P1065 Opel Zafira Door Lock Cylinder Circuit Open