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1999 DODGE RAM VAN

3.9L V6•4WD•AUTOMATIC•gas
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Repairs0Labor564Torque2402Fluid9DTC645Battery0Maintenance0Recalls0
P2603moderate severityPowertrain

Coolant Pump A Control Circuit High

on 1999 Dodge Ram Van 3.9L V6 · 4WD

What this code means

High voltage on auxiliary coolant pump circuit.

Symptoms

  • Check engine light
  • Pump runs constantly

Common causes

  • Open ground
  • Short to power
  • Control module issue

Diagnostic steps

  1. Check ground circuit
  2. Measure voltage

Repair notes

Repair wiring or replace pump.

Other Powertrain codes on this vehicle

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