The P1000 code - Definition, Causes, and Symptoms (and How to Fix It)

As you drive down the highway, the Check Engine Light turns on. What now? The P1000 code might be the result of a scan done with an OBDII device. It can allow you to pinpoint the cause. 

We will be evaluating the meaning of P1000 and providing solutions. It is also possible to find solutions by looking at its causes and symptoms. 

Code Definition

• P1000 (Ford) – OBDII Monitor Testing Not Complete 
• P1000 (KIA) – System diagnosis incomplete
• P1000 (Jaguar) – System readiness test not complete 
• P1000 (Mazda) – OBDII Drive Cycle Malfunction
• P1000 (Land Rover) – Engine control module (ECM) memory erased – no codes stored 

What does the P1000 code mean?

Code P1000 is manufacturer-specific, but means the same thing across the board. With Ford and Jaguar vehicles, the OBDII monitor testing didn’t complete. Mazda says it's an OBDII-related drive cycle problem. With every model, the code indicates that the system wasn’t able to do a full diagnostic check. 

Trouble code 1000 indicates that the onboard diagnosis system has failed to perform its usual type of readiness checks. To determine whether any faults exist, these checks are performed before starting the engine. Active faults are saved in the system until the Check Engine Light turns on. 

It’s when the light comes on without a normal fault that P1000 occurs. This simply indicates that the system couldn’t determine if there were faults because the check wasn’t completed. 

Trouble code P1000 symptoms

P1000 Trouble Code will show no symptoms in the vast majority of cases. Except for the Check Engine Light, it's not indicative of anything. Unless there are other problems with the vehicle, you shouldn’t notice other symptoms.

Here’s the list of what might occur:

The P1000 Code: Causes

There aren’t many possible causes of the P1000 code. It is common for the P1000 code to be caused by a disconnect or clearing codes. 

Below are some common reasons:

• It has been taken out of service.
• Disconnecting the Powertrain Control Module PCM
• OBDII Monitor failure occurred before the completion of the drive cycle
• DTCs were removed before codes could be resolved

Is the P1000 Code Really Serious?

Very low – It’s unlikely that you are experiencing any problems if this is the only code that was set. The system could check again and it might resolve itself. If the code doesn’t go away on its own, you want to have the system looked at.

These codes can help to determine the severity of the problem. Get your vehicle checked out before you have bigger problems. 

How can the P1000 code be fixed?

It’s unlikely that you need to do anything to repair the P1000 code. When the vehicle passes diagnostic checks, it should switch off.

These are just a few solutions to be aware of:

• For code to turn off the engine, go through the entire drive cycle
• Repair any other codes if they are present

Common errors in P1000 diagnosis

Because this is a manufacturer-specific code, you must reference the procedures and tips for your particular make. For a Ford or Jaguar, the steps for turning off your light might be slightly different. You can find these steps in your car’s service manual.

Additionally, it’s important to determine if other codes are present. You will need to fix these codes in order to be able to remove the code. 

How do you diagnose the P1000 trouble code?

To remove P1000, professional mechanics will only need to follow these steps. It doesn’t take a lot of time or effort. 

Below are some steps:

1. Download and open freeze frame data with your code scanner.
2. You must first resolve any other codes.
3. Clear any other codes before you start the engine cycle as directed by your car manufacturer. Some Ford cars have a drive cycle that involves starting the vehicle, turning the engine on for several minutes, then driving the specified distance for a set amount of time. Follow the directions to ensure you maintain a certain speed for a set amount of time. 
4. The code will go off and you don't have any other option. You might have to perform advanced diagnostics if your code is not gone. 

Calculated Cost for Repair

To repair the P1000 trouble code, you shouldn’t need to spend any money, unless you need help from a professional shop. You can usually resolve the problem by just running your car through a cycle. 

This doesn’t cost you any money but does take a small amount of time. It is also important to know the right drive cycle procedure for each vehicle. 

The P1000 Code: Mechanics Tips

You can see several codes in combination with the P1000. You should apply any of the codes to correct the problem and then the P1000 code will disappear.

• P0171 – System Too Lean (Bank 1)
• P0174 – System Too Lean (Bank 2)
• P1001 – Key on Engine Running (KOER) Not Able to Complete, KOER Aborted
• P1101 – Mass Air Flow (MAF) Sensor Out of Self-Test Range
• P1299 – Cylinder Head Over Temperature Protection Active
• P1405 – Differential Pressure Feedback Sensor Upstream Hose Off or Plugged
• P1639 – Vehicle ID Block Corrupted or Not Programmed