Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer has a memory problem. It's like when your game console can't save your game progress.
This code indicates that there is an error with the non-volatile memory (NVM) in the vehicle's control module.
The P16A3 code is triggered when the powertrain control module (PCM) or another control module detects an issue with its non-volatile memory. This memory is used to store data that must be retained even when the vehicle is turned off.
• Check Engine Light is on
• Vehicle may not start
• Poor engine performance
• Faulty control module
• Corrupted software
• Electrical issues such as a poor ground or short circuit
PCM: Powertrain Control Module
NVM: Non-Volatile Memory
• Use an OBD-II scanner to confirm the code.
• Check for other related codes.
• Inspect the control module and wiring for damage.
• Reprogram or update the control module software.
• Replace the faulty control module.
• Repair any damaged wiring or connectors.
• OBD-II scanner
• Multimeter
• Diagnostic software
$300 - $1500
Difficult
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly update vehicle software.
• Ensure electrical connections are secure.
• Avoid jump-starting the vehicle improperly.
Control Module Error
• Have the vehicle inspected by a professional.
• Avoid driving the vehicle until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on control modules.
This code has been more common in vehicles with older control modules or those that have experienced electrical issues.
High – This issue can lead to vehicle performance problems or a no-start condition.
Driving with this code may lead to unsafe vehicle operation. It is advised to address the issue promptly.
• Vehicle must be turned off and on to test memory retention.
• Ensure battery voltage is within normal range.
The control module is typically located under the dashboard or in the engine compartment.
Q: Can I drive with a P16A3 code?
A: It's not recommended as it can lead to further vehicle issues.
Q: Will disconnecting the battery clear the code?
A: Disconnecting the battery may clear the code temporarily, but it won't fix the underlying issue.
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