Hours: 07–23 daily

TuningBot DTC Database · v4.37.15

P1237 VAG - Diagnostic Trouble Code (2 interpretations)

Manufacturer-specific interpretation for VAG. All interpretations of P1237

P · PowertrainFuelOBD2

What P1237 means

P1237
Injector 1 - open circuit VAG · fuel Data confidence 62%

The control module detected an interruption (open circuit) in the Injector 1 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring open circuit
  • injector
Applies to Audi
P1237
Fuel Injector for Cylinder 1 (N30): Open Circuit VAG · fuel Data confidence 88%

The control module detected an interruption (open circuit) in the Fuel Injector for Cylinder 1 (N30) circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Volkswagen. Volkswagen Group tools also report it as fault code 17645. Documented across Volkswagen Group applications (Audi, SEAT and Škoda included).

Symptoms

  • MIL On
  • Poor engine performance

Possible causes

  • Fuse for injector
  • Wiring harness issue
  • Failed injector
  • Failed ECM

Recommended checks

  • Inspect fuse for injector
  • Inspect wiring to and from injector, see repair manual
Applies to Volkswagen

Related and nearby codes

How to read P1237

P

Powertrain: engine, transmission and driveline systems.

1

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

237

Specific fault index within the subsystem.

Frequently asked questions about P1237

What does P1237 mean?

Diagnostic Trouble Code (2 interpretations). The control module detected an interruption (open circuit) in the Injector 1 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by Audi.

Is P1237 generic or manufacturer-specific?

P1237 is a manufacturer-specific code. In this database it is documented for: VAG. The same number can mean something different on other brands.

Can TuningBot remove P1237 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 tuningStage 1 dyno results for VAG engines See the results →

← Search the full DTC database