Engine-Codes - Honda - P1658 2009 HONDA ACCORD

P1658 2009 HONDA ACCORD Code - Electronic Throttle Control System Control Relay On Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

|P1658 2009 HONDA ACCORD code possible causes

  • Faulty Electronic Throttle Control System (ETCS) Relay
  • Electronic Throttle Control System Relay harness is open or shorted
  • Electronic Throttle Control System Relay circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

|How is the P1658 2009 HONDA ACCORD code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P1658 2009 HONDA ACCORD code

Labor: 1.0

The cost to diagnose the P1658 2009 HONDA ACCORD code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P1658 2009 HONDA ACCORD code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is P1658 2009 HONDA ACCORD code meaning?

The Powertrain Control Module (PCM) controls the throttle valve opening. The system includes the throttle actuator, the throttle valve, Throttle Position (TP) sensors A and B, the Accelerator Pedal Position (APP) sensor, the Electronic Throttle Control System (ETCS) control relay, and the PCM. The APP sensor is operated via the throttle cable to determine the accelerator opening value when the driver presses the accelerator pedal. The accelerator pedal opening value is converted to a signal in the APP sensor and transmitted to the PCM to compute the target position. The PCM determines the throttle valve target position according to the signal received and operates the throttle actuator to move the throttle valve to the target position. The actual throttle valve position is determined by TP sensor A (installed in the throttle body). When the voltage is applied from the ETCS control relay to the IG1ETCS terminal for a set time after the ETCS control relay is turned off, the PCM detects a malfunction in the ETCS control relay power switch and a DTC is stored.

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