OBD Guide

P2ACA

Charge Air Cooler Coolant Temperature Sensor B Circuit High

P2ACA is an OBD-II diagnostic trouble code meaning: Charge Air Cooler Coolant Temperature Sensor B Circuit High. Common causes: coolant temperature sensor b malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Activating emergency engine operation
  • Unstable operation at idle

Causes

  • Coolant Temperature Sensor B Malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Problems with the engine control unit

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect the connectors and contacts of the sensor
  3. Check sensor resistance at different temperatures
  4. Replace temperature sensor if necessary
  5. Check and, if necessary, update the ECU software

Related codes

Error P2ACA by Vehicle Brand

FAQ

What does the P2ACA code mean?

P2ACA is an OBD-II diagnostic trouble code that indicates: Charge Air Cooler Coolant Temperature Sensor B Circuit High

What causes a P2ACA error code?

The most common causes of P2ACA include: Coolant Temperature Sensor B Malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring harness damage.

How do I fix a P2ACA diagnostic trouble code?

To fix P2ACA: Check the integrity of the sensor circuit. Inspect the connectors and contacts of the sensor. Check sensor resistance at different temperatures. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2ACA?

Yes, but get it checked soon

How much does it cost to fix P2ACA?

The estimated repair cost for P2ACA is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat