Bosch 4-Pin MAP Sensor & Ignition Coil Connector – OEM 1928405525 / 2345394-1
Direct OEM-specification replacement for the Bosch 4-pin connector used on intake manifold absolute pressure (MAP) sensors and high-voltage ignition coils. Cross-references Bosch part numbers 1928405525 (1 928 405 525) and TE Connectivity 2345394-1. Used across VW, Audi, BMW, Ford, and Renault platforms. Available bare or with 15cm pre-wired leads.
| OEM Number | Brand |
|---|---|
| 1928405525 / 1 928 405 525 | Bosch connector assembly |
| 2345394-1 | TE Connectivity housing |
| Pin | Function | Failure Symptom if Corroded |
|---|---|---|
| 1 | +5V reference voltage from ECU | P0107 — MAP circuit low, limp mode |
| 2 | MAP signal output to ECU | P0106 — MAP range/performance, rough idle |
| 3 | Signal ground / return | P0108 — MAP circuit high |
| 4 | Temperature signal (combined MAP+IAT sensor) | P0112 / P0113 — IAT circuit fault |
| Pin | Function | Failure Symptom if Corroded |
|---|---|---|
| 1 | +12V power supply to coil primary | Cylinder misfire, P0300–P0308 |
| 2 | ECU trigger signal (coil primary ground control) | No spark on cylinder, P0351–P0358 |
| 3 | Ground | Coil not firing, misfire |
| 4 | Coil diagnostic / ion sense signal | Misfire detection fault |
| Attribute | Detail |
|---|---|
| Pin Count | 4-Pin |
| OEM Part Numbers | 1928405525 / 2345394-1 |
| Housing Material | High-temp nylon (PA66-GF) |
| Wire Option | Bare connector / 15cm pre-wired leads |
| Application | MAP/IAT sensor, ignition coil harness |
| Compatible Brands | VW, Audi, BMW, Ford, Renault, Peugeot/Citroën |
| Code | Description |
|---|---|
| P0106 | MAP sensor — range/performance |
| P0107 | MAP sensor — circuit low |
| P0108 | MAP sensor — circuit high |
| P0300–P0308 | Random/cylinder-specific misfire (ignition coil application) |
| P0351–P0358 | Ignition coil primary circuit malfunction |
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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4 Pin Connectors
