U1010 – OBD-II DTC

OBD-II DTC U1010 – SCP (J1850) Invalid or Missing Data for Engine Air Intake

DTC U1010 meaning

DTC U1010 refers to a communication issue within the vehicle’s onboard diagnostic system, specifically related to the Engine Air Intake data. This code indicates that the data from the engine air intake sensor is either invalid or missing, which can affect the engine’s performance and efficiency. The code is part of the SCP (J1850) protocol, which is used for communication between various modules in the vehicle.

DTC U1010 symptoms

Common symptoms associated with DTC U1010 may include:

• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel economy
• Rough idling or stalling
• Increased emissions

DTC U1010 causes

Several factors can lead to the triggering of DTC U1010, including:

• Faulty engine air intake sensor
• Wiring issues or damaged connectors
• Faulty Engine Control Module (ECM)
• Software glitches in the vehicle’s computer system
• Intermittent communication issues between modules

DTC U1010 seriousness

DTC U1010 is considered a moderate to serious issue. While it may not cause immediate catastrophic failure, it can lead to significant engine performance problems and increased emissions. Ignoring this code can result in further damage to the engine or related components, as well as potential failure to pass emissions testing.

How to diagnose DTC U1010

To diagnose DTC U1010, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the U1010 code.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the engine air intake sensor and its wiring for damage or corrosion.
4. Test the engine air intake sensor using a multimeter to ensure it is functioning correctly.
5. Examine the communication lines between the ECM and the air intake sensor.
6. Check for software updates or reprogramming needs for the ECM.

How to fix DTC U1010 step-by-step instructions

To fix DTC U1010, follow these steps:

1. Repair or replace any damaged wiring or connectors related to the engine air intake sensor.
2. If the engine air intake sensor is faulty, replace it with a new one.
3. Clear any stored trouble codes using an OBD-II scanner.
4. Test drive the vehicle to see if the Check Engine Light returns.
5. If the code reappears, further diagnose the ECM and communication lines.

How to erase DTC U1010

To erase DTC U1010, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to ensure the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.