OBD Guide
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P16E7

Internal Control Module Volt Supply Voltage 1 Performance

P16E7 is an OBD-II diagnostic trouble code meaning: Internal Control Module Volt Supply Voltage 1 Performance. Common causes: poor contact in ecu connectors, main relay fault. Estimated repair cost: $17–278.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–278 (est.)

Symptoms

  • Unstable engine operation
  • Power dips
  • Check Engine Light Illuminates
  • Problems starting the engine
  • Malfunctions of electronic systems

Causes

  • Poor contact in ECU connectors
  • Main relay fault
  • Open or short circuit in the power supply
  • Fuse problems
  • Malfunction of the control module itself

How to Fix

  1. Check the condition of the fuses
  2. Inspect ECU connectors and wiring harness
  3. Check the voltage at the module power terminals
  4. Test main relay
  5. If necessary, replace the control module

Related codes

P16E8P16E9P16F0

FAQ

What does the P16E7 code mean?

P16E7 is an OBD-II diagnostic trouble code that indicates: Internal Control Module Volt Supply Voltage 1 Performance

What causes a P16E7 error code?

The most common causes of P16E7 include: Poor contact in ECU connectors; Main relay fault; Open or short circuit in the power supply; Fuse problems.

How do I fix a P16E7 diagnostic trouble code?

To fix P16E7: Check the condition of the fuses. Inspect ECU connectors and wiring harness. Check the voltage at the module power terminals. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P16E7?

Limited driving only, diagnose soon

How much does it cost to fix P16E7?

The estimated repair cost for P16E7 is $17–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat