OBD Guide
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U2016

Powertrain Control Module Short To Ground

U2016 is an OBD-II diagnostic trouble code meaning: Powertrain Control Module Short To Ground. Common causes: wiring harness damage, short circuit in pcm circuit. Estimated repair cost: $56–222.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Unstable engine operation
  • Power dips
  • Check Engine Light Illuminates
  • Problems starting the engine
  • Lost connection with diagnostic equipment

Causes

  • Wiring harness damage
  • Short circuit in PCM circuit
  • Malfunction of the control module itself
  • Corrosion of connectors
  • Grounding problems

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect PCM connectors for corrosion
  3. Check module grounding
  4. Test the PCM using diagnostic equipment
  5. Replace the control module if necessary

Related codes

U2015U2017U2018

FAQ

What does the U2016 code mean?

U2016 is an OBD-II diagnostic trouble code that indicates: Powertrain Control Module Short To Ground

What causes a U2016 error code?

The most common causes of U2016 include: Wiring harness damage; Short circuit in PCM circuit; Malfunction of the control module itself; Corrosion of connectors.

How do I fix a U2016 diagnostic trouble code?

To fix U2016: Check the integrity of the wiring harness. Inspect PCM connectors for corrosion. Check module grounding. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U2016?

Do not drive — repair immediately

How much does it cost to fix U2016?

The estimated repair cost for U2016 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat