OBD Guide
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P1016

Reductant Control Module Sensor Serial Communication Circuit High Voltage

P1016 is an OBD-II diagnostic trouble code meaning: Reductant Control Module Sensor Serial Communication Circuit High Voltage. Common causes: open or short circuit in the communication circuit, reductant control module malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Problems with the SCR system
  • Errors in the emission system

Causes

  • Open or short circuit in the communication circuit
  • Reductant control module malfunction
  • Wiring Harness Problems
  • Corrosion or poor contact in connectors
  • Engine ECU malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Inspect connectors for corrosion
  3. Check the voltage in the communication circuit
  4. Test the reductant control module
  5. Replace the module if necessary

Related codes

P1015P1017P1018

FAQ

What does the P1016 code mean?

P1016 is an OBD-II diagnostic trouble code that indicates: Reductant Control Module Sensor Serial Communication Circuit High Voltage

What causes a P1016 error code?

The most common causes of P1016 include: Open or short circuit in the communication circuit; Reductant control module malfunction; Wiring Harness Problems; Corrosion or poor contact in connectors.

How do I fix a P1016 diagnostic trouble code?

To fix P1016: Check the integrity of the wiring harness. Inspect connectors for corrosion. Check the voltage in the communication circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1016?

Yes, but get it checked soon

How much does it cost to fix P1016?

The estimated repair cost for P1016 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat