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OBDII/EOBD diagnostics trouble codes definition

If your car is equipped with OBD-II or EOBD, you can access over 5,000 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 13,500 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

Supported manufacturers with specific OBD2 codes:

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Detailed Description of Error P2136

The OBDII error code P2136 is a generic trouble code that indicates a problem with the throttle/pedal position sensor/switch. Specifically, it refers to a voltage correlation issue between the ''A'' and ''C'' circuits of the throttle/pedal position sensor/switch. This sensor is responsible for monitoring the throttle valve''s position and sending signals to the engine control module (ECM) to adjust fuel injection and ignition timing accordingly.

The ''A'' and ''C'' circuits are two separate voltage signals that are generated by the throttle/pedal position sensor/switch. The ECM expects these signals to be within a certain range and to have a specific correlation with each other. If the ECM detects a discrepancy between these signals, it will trigger the P2136 error code.

This error code can cause a range of problems, including poor engine performance, hesitation, and stumbling. In some cases, it may also cause the engine to stall or fail to start.

Possible Causes of Error P2136

There are several possible causes of the P2136 error code, including:

  • Dirty or faulty throttle/pedal position sensor/switch
  • Wiring issues, such as short circuits or open circuits, in the ''A'' or ''C'' circuits
  • Corrosion or damage to the throttle/pedal position sensor/switch connector
  • ECM malfunction or software issue
  • Throttle valve or throttle body problems
  • Accelerator pedal or pedal position sensor issues

Possible Fixes for Error P2136

To fix the P2136 error code, you may need to try one or more of the following:

  • Inspect and clean the throttle/pedal position sensor/switch and its connector
  • Check the wiring and connections for the ''A'' and ''C'' circuits and repair or replace as needed
  • Replace the throttle/pedal position sensor/switch if it is faulty
  • Update the ECM software or reprogram the ECM if necessary
  • Inspect and repair or replace the throttle valve or throttle body if necessary
  • Check the accelerator pedal and pedal position sensor for issues and repair or replace as needed

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