C0870

Control Module Voltage Reference

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect operation of sensors
Floating idle speed
Check Engine Light Illuminates
Reduced engine efficiency

Causes

Wiring Harness Problems
Control module malfunction
Short circuit in the circuit
Poor contact in connectors

How to Fix

Check wiring harness for damage
Check control module connectors
Measure the reference voltage on the control module
If necessary, replace the control module

Related codes

C0871 C0872 P0600