P1255 CADILLAC – High Temperature Fuel Pump Control Module Driver

P1255 CADILLAC Possible Causes

  • Faulty fuel pump control module
  • Fuel pump control module harness is open or shorted
  • Poor electrical connection in the fuel pump control module circuit

How is the P1255 CADILLAC code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine light on (or service engine soon warning light)

P1255 CADILLAC Meaning

The Engine Control Module (ECM) provides voltage to the fuel pump control module when the ECM detects that the ignition is turned on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is running or cranking. While this voltage is being received, the fuel pump control module provides variable voltage to the fuel tank pump module to maintain the desired fuel pressure. The Diagnostic Trouble Code (DTC) will be set if the fuel pump control module detects an overheating fault.

P1255 CHEVROLET – High Temperature Fuel Pump Control Module Driver

P1255 CHEVROLET Possible Causes

  • Faulty fuel pump control module
  • Fuel pump control module harness is open or shorted
  • Poor electrical connection in the fuel pump control module circuit

How is the P1255 CHEVROLET code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine light on (or service engine soon warning light)

P1255 CHEVROLET Meaning

The Engine Control Module (ECM) provides voltage to the fuel pump control module when the ECM detects that the ignition is turned on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is running or cranking. While this voltage is being received, the fuel pump control module provides variable voltage to the fuel tank pump module to maintain the desired fuel pressure. The Diagnostic Trouble Code (DTC) will be set if the fuel pump control module detects an overheating fault.

P1255 GMC – High Temperature Fuel Pump Control Module Driver

P1255 GMC Possible Causes

  • Faulty fuel pump control module
  • Fuel pump control module harness is open or shorted
  • Poor electrical connection in the fuel pump control module circuit

How is GMC P1255 Code Repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine light on (or service engine soon warning light)

P1255 GMC Meaning

The Engine Control Module (ECM) provides voltage to the fuel pump control module when the ECM detects that the ignition is turned on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is running or cranking. While this voltage is being received, the fuel pump control module provides variable voltage to the fuel tank pump module to maintain the desired fuel pressure. The Diagnostic Trouble Code (DTC) will be set if the fuel pump control module detects an overheating fault.

P1255 VOLKSWAGEN – Short Circuit of Engine Coolant Temperature Sensor Circuit to Ground

P1255 VOLKSWAGEN Possible Causes

  • Faulty engine coolant temperature sensor
  • Engine coolant temperature sensor harness is open or shorted
  • Poor electrical connection in the engine coolant temperature sensor circuit
 

How is the P1255 VOLKSWAGEN code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

 
 

Possible Symptoms

  • Engine light on (or service engine soon warning light)
 

P1255 VOLKSWAGEN Meaning

Engine Coolant Temperature Sensor Circuit Shorted to Ground is the generic description for Volkswagen code P1255, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about the Volkswagen P1255 OBDII code.

P1256 – Engine Coolant Temperature Sensor Open/Short to Positive

P1256 Possible Causes

  • Faulty engine coolant temperature sensor
  • Engine coolant temperature sensor harness is open or shorted
  • Poor electrical connection in engine coolant temperature sensor circuit

How is code P1256 repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check Engine Light on (or Service Engine Soon warning light)

P1256 Meaning

The Engine Control Module (ECM) monitors the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor does not meet factory specifications.

P1256 AUDI – Engine Coolant Temperature Sensor Open/Short to Positive

P1256 AUDI Possible Causes

  • Faulty engine coolant temperature sensor
  • Engine coolant temperature sensor harness is open or shorted
  • Poor electrical connection in the engine coolant temperature sensor circuit
 

How is code P1256 AUDI repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

 
 

Possible Symptoms

  • Engine light on (or service engine soon warning light)
 

P1256 AUDI Meaning

The Engine Control Module (ECM) monitors the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor does not meet factory specifications.

P1256 VOLKSWAGEN – Engine Coolant Temperature Sensor Open / Short to Positive

P1256 VOLKSWAGEN Possible Causes

  • Faulty engine coolant temperature sensor
  • Engine coolant temperature sensor harness is open or shorted
  • Poor electrical connection in the engine coolant temperature sensor circuit

How is the P1256 VOLKSWAGEN code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check Engine Light on (or Service Engine Soon warning light)

P1256 VOLKSWAGEN Meaning

The Engine Control Module (ECM) monitors the engine coolant temperature sensor. The ECM sets the OBDII code when the engine coolant temperature sensor does not meet factory specifications.

P1257 – VTEC System Malfunction

P1257 Possible Causes

  • Low engine oil level
  • Low engine oil pressure
  • Blocked oil passage
  • Faulty VCT oil control valve

How is P1257 code repair performed?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1257 Meaning

The VTEC system, in conjunction with the Engine Control Module (ECM), activates the VTEC solenoid valve to control oil pressure to the VTEC mechanism which is installed in the valve system to switch valve timing between low and high. If the VTEC solenoid valve has an open circuit or short circuit, the P1257 code is set.

P1257 ACURA – VTEC System Malfunction

P1257 ACURA Possible Causes

  • Low engine oil level
  • Low engine oil pressure
  • Blocked oil passage
  • Faulty VCT oil control valve

How is the P1257 ACURA code repaired?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Check engine light on (or service engine soon warning light)

P1257 ACURA Meaning

The VTEC system, in conjunction with the Engine Control Module (ECM), activates the VTEC solenoid valve to control oil pressure to the VTEC mechanism which is installed in the valve system to switch valve timing between low and high. If the VTEC solenoid valve has an open circuit or short circuit, the P1257 code is set.

P1257 CADILLAC – Overboost Supercharging System

How is the P1257 CADILLAC code repair performed?

Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

  • Engine light on (or service engine soon warning light)

P1257 CADILLAC Meaning

With the engine running, the intake air temperature (IAT) sensor enters above 14°F, then the powertrain control module (PCM) detects that the engine torque was above a maximum threshold value (actual value versus commanded and RPM) for 6 seconds.