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Code P087B

Quick reference

P087B at a glance

Plain-language meaning
This code means that the car's computer is having trouble reading the position of the clutch. It's like if you were trying to play a video game, but your controller wasn't working right and the buttons weren't doing what they should.
Urgency
Moderate – Should be addressed soon to avoid potential transmission damage.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the car's computer is having trouble reading the position of the clutch. It's like if you were trying to play a video game, but your controller wasn't working right and the buttons weren't doing what they should.

Explanation

The P087B code is triggered when the vehicle's powertrain control module (PCM) detects a problem with the clutch position sensor B, which is not providing expected readings.

Technical description

The clutch position sensor B is responsible for providing the PCM with information about the position of the clutch. If the sensor's signal is out of the expected range or not performing as expected, the PCM will set the P087B code. This can affect the vehicle's ability to shift gears properly.

Symptoms

• Check Engine Light illuminated

• Difficulty shifting gears

• Erratic transmission behavior

Common Causes

• Faulty clutch position sensor B

• Wiring issues or poor connections

• Faulty PCM

Glossary

PCM: Powertrain Control Module

OBD-II: On-Board Diagnostics II

Diagnosis steps

• Use an OBD-II scanner to confirm the code

• Inspect the clutch position sensor B and its wiring for damage

• Test the sensor's output with a multimeter

Repair procedures

• Replace the clutch position sensor B if faulty

• Repair or replace damaged wiring

• Reprogram or replace the PCM if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Ford Focus

• Chevrolet Cruze

• Honda Civic

Preventive measures

• Regular maintenance checks

• Ensure proper clutch operation

• Inspect wiring regularly

Error code type

Sensor Issue

User experience recommendations

• Get the vehicle inspected by a professional

• Avoid driving if the vehicle is not shifting properly

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on sensors and related components.

Historical data

This code has been known to appear in vehicles with manual transmissions where clutch position sensors are used to aid in gear shifting.

Urgency level

Moderate – Should be addressed soon to avoid potential transmission damage.

Testing conditions

• Vehicle at operating temperature

• Engine running and transmission in neutral

Component location

The clutch position sensor B is typically located near the clutch pedal or on the transmission housing.

FAQs

Q: Can I drive with a P087B code?
A: It's not recommended to drive with this code as it can lead to transmission problems.

Q: How do I reset the P087B code?
A: After repairing the issue, you can reset the code using an OBD-II scanner.

Optional diagnostic gear

Tools that may help diagnose P087B

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

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WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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