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TuningBot DTC Database · v4.37.15

P1291 Diagnostic Trouble Code (6 interpretations)

6 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.

P · PowertrainEngineOBD2

Chrysler

1 interpretation
P1291
No Temp. Rise Seen From Intake Heaters Conditions Chrysler · engine Data confidence 62%

The control module detected a fault associated with the No Temp. Rise Seen From Intake Heaters Conditions circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.

Dodge

1 interpretation
P1291
No Temperature Rise Seen From Intake Air Heater Dodge · engine Data confidence 80%

The control module detected a fault associated with the No Temperature Rise Seen From Intake Air Heater circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Dodge.

Ford

1 interpretation
P1291
Injector High Side Short To GND Or VBATT Bank 1 Ford · fuel Data confidence 80%

The control module detected a fault associated with the Injector High Side Short To GND Or VBATT Bank 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Ford.

Possible causes

  • High side short circuit to ground/positive
  • injector(s)
  • injector control module

Jeep

1 interpretation
P1291
No Temp Rise Seen From Fuel Heaters Jeep · engine Data confidence 62%

The control module detected a fault associated with the No Temp Rise Seen From Fuel Heaters circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Jeep.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Confirm the exact vehicle, ECU and software context
  • Inspect relevant wiring and connectors
  • Check applicable OEM service information

VAG

2 interpretations
P1291
Engine coolant temperature (ECT) sensor, ECM controlled cooling system - high input VAG · thermal_management Data confidence 62%

The control module detected that the Engine coolant temperature (ECT) sensor, ECM controlled cooling system signal stayed above the expected range. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring
  • ECT sensor
Applies to Audi
P1291
Engine coolant temperature (ECT) sensor, ECM controlled cooling system - high input VAG · thermal_management Data confidence 62%

The control module detected that the Engine coolant temperature (ECT) sensor, ECM controlled cooling system signal stayed above the expected range. This is the manufacturer-specific definition used by Volkswagen.

Possible causes

  • Wiring
  • ECT sensor
Applies to Volkswagen

Related and nearby codes

How to read P1291

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

291

Specific fault index within the subsystem.

Frequently asked questions about P1291

What does P1291 mean?

Diagnostic Trouble Code (6 interpretations). The control module detected a fault associated with the No Temp. Rise Seen From Intake Heaters Conditions circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.

Is P1291 generic or manufacturer-specific?

P1291 is a manufacturer-specific code. In this database it is documented for: Chrysler, Dodge, Ford, Jeep, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1291 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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