OBD Guide

P2A48

Alternative Fuel Tank C Pressure Sensor Circuit Low

P2A48 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank C Pressure Sensor Circuit Low. Common causes: fuel tank pressure sensor fault c, 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
  • Unstable engine idling
  • Problems starting the engine

Causes

  • Fuel tank pressure sensor fault C
  • Open or short circuit in the sensor circuit
  • Poor connection or corroded contacts
  • Problems with the engine control unit
  • Mechanical damage to wiring

How to Fix

  1. Check the continuity of the pressure sensor circuit
  2. Check the connections and contacts of the sensor
  3. Test the pressure sensor with a multimeter
  4. Replace pressure sensor if necessary
  5. Reset the error code and check if it returns

Related codes

Error P2A48 by Vehicle Brand

FAQ

What does the P2A48 code mean?

P2A48 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank C Pressure Sensor Circuit Low

What causes a P2A48 error code?

The most common causes of P2A48 include: Fuel tank pressure sensor fault C; Open or short circuit in the sensor circuit; Poor connection or corroded contacts; Problems with the engine control unit.

How do I fix a P2A48 diagnostic trouble code?

To fix P2A48: Check the continuity of the pressure sensor circuit. Check the connections and contacts of the sensor. Test the pressure sensor with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2A48?

Yes, but get it checked soon

How much does it cost to fix P2A48?

The estimated repair cost for P2A48 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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