P1258 – OBD-II DTC

OBD-II DTC P1258 – Pedal Correlation PDS1 and LPDS Low

DTC P1258 meaning

DTC P1258 refers to a diagnostic trouble code that indicates a problem with the correlation between the accelerator pedal position sensor (PDS1) and the low pedal position sensor (LPDS). This code is triggered when the Engine Control Module (ECM) detects that the signals from these sensors do not match the expected values, which can affect engine performance and throttle response.

DTC P1258 symptoms

Common symptoms associated with DTC P1258 may include:

• Illumination of the Check Engine Light (CEL)
• Unresponsive or erratic throttle behavior
• Reduced engine power or performance
• Difficulty in accelerating
• Potential stalling or hesitation during driving

DTC P1258 causes

Several factors can lead to the triggering of DTC P1258, including:

• Faulty accelerator pedal position sensor (PDS1)
• Faulty low pedal position sensor (LPDS)
• Wiring issues or poor connections in the sensor circuits
• ECM software issues or malfunctions
• Mechanical problems with the throttle body or linkage

DTC P1258 seriousness

DTC P1258 is considered a moderate to serious issue. While it may not cause immediate engine failure, it can lead to reduced performance and drivability issues. Ignoring this code can result in further complications, including potential safety hazards due to unresponsive throttle control.

How to diagnose DTC P1258

To diagnose DTC P1258, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1258 code.
2. Inspect the accelerator pedal position sensor and low pedal position sensor for physical damage or disconnection.
3. Check the wiring and connectors for signs of wear, corrosion, or loose connections.
4. Test the voltage and signal output from both sensors using a multimeter.
5. Compare the readings from both sensors to determine if they are within the specified range.
6. Check for any additional trouble codes that may provide further insight into the issue.

How to fix DTC P1258 step-by-step instructions

To fix DTC P1258, follow these steps:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and repair any damaged wiring or connectors related to the PDS1 and LPDS.
3. If necessary, replace the faulty accelerator pedal position sensor (PDS1) or low pedal position sensor (LPDS).
4. Ensure that all connections are secure and free of corrosion.
5. Recheck the sensor outputs to confirm they are functioning correctly.
6. Test drive the vehicle to ensure the issue is resolved and the Check Engine Light does not reappear.

How to erase DTC P1258

To erase DTC P1258, 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. Access the scanner’s menu and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. 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.