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GTECH Calibration
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P1300

Boost Calibration Fault.

  • Ford
  • Powertrain
  • Manufacturer code
  • Medium severity

How this code is built

P
SystemPowertrain
1
Defined byThe manufacturer
3
AreaIgnition system or misfire
00
FaultThe specific fault in that area

What it means

On Ford (and Lincoln and Mercury) applications, P1300 means Boost Calibration Fault on a turbocharged or supercharged engine. The powertrain control module compared the measured boost or manifold pressure with what it expected for the current load and boost control demand. The two did not agree within limits, or the boost sensor reading failed a calibration plausibility check. The exact test and the parts involved depend on the model and engine, so check model-specific information.

Symptoms

  • Engine warning light on
  • Loss of power or flat acceleration under load
  • Boost lower or higher than normal, or surging
  • Possible limp-home or reduced power mode
  • Hissing or whistling from the intake under boost
  • Poor fuel economy

Possible causes

  • Boost or intake pressure leak (split hose, loose clamp, cracked charge pipe or intercooler joint)likely
  • Faulty or contaminated boost, manifold pressure or intake pressure sensor, or a blocked sensor port or hoselikely
  • Wiring or connector fault in the sensor circuit (poor connection, chafing, corrosion, high resistance, short)possible
  • Boost control fault such as a sticking wastegate or bypass actuator, faulty control solenoid or vacuum supply faultpossible
  • Turbocharger or supercharger mechanical wear or damage reducing or overproducing boostpossible
  • Restricted air intake or blocked air filter or exhaust restriction affecting boostrare
  • Fault in the powertrain control modulerare

How to diagnose

  1. Read all stored and pending codes and the freeze frame data. Note load, engine speed and boost reading when the code set, and check for other related codes.
  2. Visually inspect the intake tract, charge pipes, intercooler hoses and clamps for splits, oil residue, loose joints and damage. Check the air filter and intake for restrictions.
  3. Inspect the boost or pressure sensor, its connector and wiring for damage, corrosion, loose pins and chafing. Check the sensor port and any vacuum hose for blockage or leaks.
  4. With a scan tool, compare the sensor reading with ambient pressure at key on, engine off. Then compare desired and actual boost on a road test or under load.
  5. Check the sensor supply, reference and signal circuits against the wiring diagram for voltage, ground and continuity faults.
  6. Pressure test the intake system for leaks, following the procedure for the engine fitted.
  7. Check boost control components: wastegate or bypass actuator movement, control solenoid operation and vacuum or pressure supply, as specified for the model.
  8. Inspect the turbocharger or supercharger for shaft play, oil leaks and damage if boost remains wrong and everything else checks out.

How to fix

  • Repair or replace leaking hoses, pipes or clamps, and refit any loose intake connections.
  • Replace the boost or pressure sensor if it is out of range or reads incorrectly, and clear any blocked port or hose.
  • Repair damaged wiring or connectors and restore good circuit continuity.
  • Repair or replace faulty boost control parts such as the actuator, solenoid or vacuum lines.
  • Repair or replace the turbocharger or supercharger if it is mechanically faulty, and find the cause of the failure first.
  • Clear the code after the repair and road test to confirm it does not return.

Can I keep driving?

Medium severity

The car can usually be driven carefully for a short time, but power may be reduced and the fault may worsen. Avoid heavy loads and hard acceleration, and get it checked soon, especially if it goes into limp mode or you hear unusual turbo noise.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.

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