OBD Guide

P1CA9

Flow Control Solenoid 'A' Control Circuit High

P1CA9 is an OBD-II diagnostic trouble code meaning: Flow Control Solenoid 'A' Control Circuit High. Common causes: short circuit to positive in the control circuit, flow control solenoid malfunction. Estimated repair cost: $9–39.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$9–39 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine performance
  • Rough engine operation
  • Increased fuel consumption
  • There may be interruptions in the operation of the system where the solenoid is used

Causes

  • Short circuit to positive in the control circuit
  • Flow control solenoid malfunction
  • Broken or damaged wiring
  • Connector problems or contact corrosion
  • Engine control unit malfunction

How to Fix

  1. Check the solenoid control circuit for a short circuit.
  2. Check solenoid resistance to specifications
  3. Inspect wires and connectors for damage
  4. If necessary, replace the solenoid or damaged wires.
  5. Reset the error code and check the system

Related codes

FAQ

What does the P1CA9 code mean?

P1CA9 is an OBD-II diagnostic trouble code that indicates: Flow Control Solenoid 'A' Control Circuit High

What causes a P1CA9 error code?

The most common causes of P1CA9 include: Short circuit to positive in the control circuit; Flow control solenoid malfunction; Broken or damaged wiring; Connector problems or contact corrosion.

How do I fix a P1CA9 diagnostic trouble code?

To fix P1CA9: Check the solenoid control circuit for a short circuit.. Check solenoid resistance to specifications. Inspect wires and connectors for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1CA9?

Limited driving only, diagnose soon

How much does it cost to fix P1CA9?

The estimated repair cost for P1CA9 is $9–39. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat