P064D - OBD Trouble Code

<<See All OBD Codes

What do you know about P064D code? What is the reason behind this error in your vehicle? Should you not know this? If the PCM has detected an error in the internal processor performance with the heated oxygen sensor circuit for engine bank one, then then P064D code will be stored in your vehicle. There are other controllers which also detect an internal PCM performance error which makes the P064D code to be stored.

Exhaust gases are pushed through exhaust manifold which is designed to flow through vent holes into HO2S. The air is heated in this chamber which forces the ions to produce voltage. When there is variation it creates fluctuations, which makes the oxygen ions to jump from one layer to other. This in turn causes changes in voltage. This is recognized by the PCM to analyses if the engine is lean or rich. Simultaneously various test is performed and if there is an internal discrepancy in H2OS detected by the PCM, P064D code will be stored in your vehicle. Also, if there are any other problems, detected by the PCM, it will indicate H2OS error and it will be stored as P064D error code and the malfunction indicator lamp will be too bright. You may require multiple failure cycles for MIL, depending on the observed severity of malfunction.

What causes this problem with the Internal Control Module O2 Sensor Processor Performance Bank 1?

• Faulty controller or programming error.
• Damaged HO2S.
• Wires and connectors are burnt, broken or disconnected.
• Leaks in Engine exhaust.
• Controller power relay is poor or a blown fuse.
• Circuit is shorted or open.
• Control module ground is not enough.

1. Exhaust System - If there are any leaks or broken pipes in your exhaust system, they must be replaced.
2. Oxygen Sensor - A faulty or broken oxygen sensor need immediate replacement.
3. Blown Fuse - Visually check this component for any leaks or broken wires. If your circuit is overloaded with heat, it will make your fuse to blow which has to be changed immediately.
4. Powertrain Control Module - A damaged or broken PCM can give rise to this error code. Get the right replacement part from parts Avatar.
5. Engine Control Module - Does your ECM function ineffectively? Visually check for the damages and get them replaced or fixed.
6. Multimeter - One of the common causes for failure in the system is due to a damaged multimeter. Repair or replace the component.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P064D here:

Common Symptoms

• Reduced fuel efficiency.
• Lack of engine performance.
• Engine drivability issues.
• Other diagnostic trouble codes.

Here are some ways with the help of which you will be able to correct the OBD Code P064D

• Fixing leaks in the exhaust system.
• Replacement of Oxygen sensor/ Powertrain control module/ Engine control module
• Repairing the blown fuses.

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade Exhaust System, Oxygen Sensor, Blown Fuse, Powertrain Control Module, Engine Control Module, Multimeter and a lot more for our precious customers.

Here are some steps which you should follow in order to diagnose this fault code:

• Diagnosing a P064D code is quite a challenge. You will need the necessary equipment to fix the damaged controller and make it successful.
• Before diagnosing the P064D code, the PCM/ECM supply codes have to be fixed. There are many preliminary tests to be conducted with the help of a diagnostic scanner, Digital Voltmeter Ohmmeter, and a source of reliable vehicle information
• Recover all the codes and freeze frame data by connecting the scanner to the diagnostic port. Write down this information for further help in the process. Now test drive the vehicle until the PCM enters readiness mode. If PCM enters this mode, it will be difficult to diagnose as the connection is intermittent. The condition has to be made worse, before diagnosing the P064D code.
• Search for the technical service bulletin when you diagnose the P064D code. Finding the right TSB can help you in a major way as it has your vehicles (year, make, model, and engine) information.
• Obtain vehicle information on connector face views, connector pinout charts, component locators, wiring diagrams, and diagnostic flow charts. Test the power supply fuses and relays and fix the repairs. Use circuit load to test the fuses.
• If all fuses and relays function properly, check the wires and joints related to controller and also check the chassis and ground junctions. Visually inspect the controller for any damages and if you come across any faults, it has to be fixed immediately.
• There can be a faulty controller if the controller power and ground circuits are intact. Sometimes you have to purchase controllers that are reprogrammed through aftermarket sources.
• Before you diagnose the HO2S make sure that the engine runs powerfully. Before you diagnose you have to address Ignition misfire codes, throttle position sensor codes, manifold air pressure code, and mass air flow sensor codes. Some automakers use fuses which can be tested using DVOM.
• If the fuse work properly, then locate the HO2S. The vehicle has to be placed in a suitable hoist and secured on stands. Once everything is in place, disconnect the wire and turn the key ON. With the help of wire diagram, check which circuit is used for supply battery voltage. Check for a proper ground too.
• If both the HO2S voltage and ground is present, connect them again. Now test drive the vehicle again. Allow the engine to be idle. Use scanner to examine the input data. When the PCM is in closed loop, the upstream HO2S should move from rich to lean.
• The P064D code is generally caused by a faulty controller where the negative test lead is connected to ground and the positive test lead is connected to the battery voltage.

Common mistakes when diagnosing the P064D code

• Fault in the PCM.
• Wiring problem.

P064E - Internal Control Module O2 Sensor Processor Performance Bank 2