OBD Guide
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P16C1

Engine Control Module Self-Test Torque Monitoring Fault

P16C1 is an OBD-II diagnostic trouble code meaning: Engine Control Module Self-Test Torque Monitoring Fault. Common causes: engine control module (ecm) malfunction, ecm software problems. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Check Engine Light Illuminates
  • Reduced engine power
  • Unstable engine operation
  • Deteriorating fuel economy
  • Power limitation (limp home mode)

Causes

  • Engine control module (ECM) malfunction
  • ECM software problems
  • Malfunction of sensors affecting torque calculation
  • Problems with wiring or connections
  • Engine mechanical problems affecting torque

How to Fix

  1. Check for ECM software updates
  2. Diagnose the engine control module
  3. Check the condition and connections of the torque sensors
  4. Inspect electrical wiring and connectors for damage
  5. If necessary, replace the engine control module

Related codes

P0606P0607P0638

FAQ

What does the P16C1 code mean?

P16C1 is an OBD-II diagnostic trouble code that indicates: Engine Control Module Self-Test Torque Monitoring Fault

What causes a P16C1 error code?

The most common causes of P16C1 include: Engine control module (ECM) malfunction; ECM software problems; Malfunction of sensors affecting torque calculation; Problems with wiring or connections.

How do I fix a P16C1 diagnostic trouble code?

To fix P16C1: Check for ECM software updates. Diagnose the engine control module. Check the condition and connections of the torque sensors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P16C1?

Limited driving only, diagnose soon

How much does it cost to fix P16C1?

The estimated repair cost for P16C1 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat