ShopBaseFree forever shop management software for auto repair shops
Try ShopBase Free β†’
P1607

ECM/PCM Internal Circuit Failure A

2016-2021 Honda Civic 2.0L I4

High SeverityPowertrain

Description

Internal ECM/PCM circuit malfunction, often during cold weather.

Symptoms

  • CEL
  • Rough running
  • TCS light
  • Erratic shifting
  • Stalling
  • Tach reads zero

Common Causes

  • Bad solder joints
  • Cold-sensitive components
  • Low battery
  • Corroded connectors

Diagnostic Steps

  1. Check battery voltage
  2. Inspect ECM connectors
  3. Monitor during cold start
  4. Test ECM outputs

Repair Notes

Replace or repair ECM/PCM.

Other Powertrain Codes

P1607 on Other Vehicles

Common Questions

What does code P1607 mean on a 2016-2021 Honda Civic?

P1607 stands for "ECM/PCM Internal Circuit Failure A". Internal ECM/PCM circuit malfunction, often during cold weather.

What are the symptoms of P1607 on a Honda Civic?

Common symptoms of P1607 include: CEL, Rough running, TCS light, Erratic shifting, Stalling, Tach reads zero.

What causes P1607 on a 2016-2021 Honda Civic?

Common causes of P1607 include: Bad solder joints, Cold-sensitive components, Low battery, Corroded connectors.

View Labor Times | View Torque Specs | View Fluid Specs