AutoCodes - OBDII Code List - P18C5 CHEVROLET

P18C5 CHEVROLET - Gear Position Sensor Circuit 1 High Voltage

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

P18C5 CHEVROLET Possible Causes

  • Faulty Gear Position Sensor
  • Gear Position Sensor harness is open or shorted
  • Gear Position Sensor circuit poor electrical connection

How do I fix code P18C5 CHEVROLET?

Check 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.
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Cost of diagnosing the P18C5 CHEVROLET code

Labor: 1.0

The cost of diagnosing the P18C5 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P18C5 CHEVROLET Description

The gear position sensor is a switching transistor mounted to the top of the transmission extension housing. The four wire sensor interfaces directly with the Engine Control Module (ECM). The ECM supplies 5 V to the gear position sensor on a 5 V reference circuit and also provides a ground path on a low reference circuit. The sensor provides a Pulse Width Modulated (PWM) duty cycle to the ECM on two signal circuits that is proportional to the linear and radial position of the corresponding magnet assembly mounted to the shift shaft. The vehicle uses the gear position sensor information primarily for Active Rev Matching and Active Fuel Management. The ECM monitors the radial position signal 1 circuit for low and high voltage conditions.
OBDII Code P18c5 Chevrolet - Gear Position Sensor Circuit 1 High Voltage -

More Information

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