P1351 on Ford: Causes, Symptoms and Fix Cost
Quick Answer
Not safe to drive
P1351 on a Ford is a manufacturer-specific code, so its meaning depends on the make. Ford lists it as an ignition diagnostic monitor (IDM) input circuit malfunction. Toyota and Lexus list it as a variable valve timing (camshaft) sensor range or performance fault on the right-hand bank, and Audi and Volkswagen as a camshaft position sensor fault on bank 1. Other makes define it differently, so confirm the definition for your car before ordering parts.
- Severity
- High · Ignition
- Typical repair cost, all makes
- €65-€5000
Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Ford and Skanyx tells you what P1351 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P1351 mean on a Ford?
The Quick Answer above is the generic definition. What follows is the model-specific detail for the Ford models that log P1351.
Ford Bronco 5.8 V8 (1996)
1996
Ford's definition is IDM input circuit malfunction (ignition diagnostic monitor circuit input fault). On a 1996 Bronco with the 351W V8, a moderator's list of causes in an owner thread was a faulty ignition control module, an engine misfire, an open or shorted module harness and a poor connection at the module. That owner's code cleared after two bad spark plug wires were replaced, so check for a misfire before buying a module.
Source: broncozone.com, aa1car.com
Sources
- broncozone.com broncozone.com/threads/p1351-trouble-code-idm-circuit-malfunction.24288
- aa1car.com aa1car.com/trouble-codes/ford_codes_p1300-p1499.htm
What causes P1351 on a Ford?
Beyond the generic causes listed on the main P1351 page, these are the patterns noted for Ford models:
Worn spark plug wires causing a misfire
: Ford Bronco 5.8 V8 (1996)
Ignition control module or its connector
: Ford Bronco 5.8 V8 (1996)
How to diagnose P1351 on a Ford with OBD2
- Find out which definition applies to your make before buying anything. A Ford IDM fault and a Toyota, Lexus, Audi or VW camshaft fault need different repairs
- Read all codes and the freeze frame. A cylinder-specific misfire code stored with P1351 points first at that cylinder's plug, wire or coil
- On a Ford with the ignition meaning, inspect the plug wires, plugs and the ignition control module connector for damage, corrosion or a loose fit
- On Toyota, Lexus, Audi or VW, look at the camshaft position sensor, its plug and wiring, then check the oil level and condition if the car has variable valve timing
- A generic reader shows the code, the freeze frame and standard live data such as rpm and coolant temperature. It cannot show camshaft or crankshaft signal values or the valve timing angle; that needs manufacturer-level software
- Listen for a timing rattle on a cold start and check for correct oil pressure. If the cheap checks do not help, have the timing chain or belt position checked before the engine is run further
- Clear the code after the repair and drive a mixed cycle to confirm it does not return
How much does P1351 cost to fix on a Ford? (EUR)
Estimated repair costs for P1351 in EUR, compiled across makes. Expect Ford parts and labour towards the upper end of each range.
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Replace spark plug wires or coil wires (Ford ignition meaning) | €30–€150 | €40–€120 | €70–€270 | Moderate |
| Replace ignition control module | €40–€300 | €50–€200 | €90–€500 | Moderate |
| Replace camshaft position sensor | €25–€120 | €40–€150 | €65–€270 | Moderate |
| Repair wiring or replace the connector pigtail | €10–€50 | €60–€180 | €70–€230 | Moderate |
| Replace VVT solenoid or control valve | €30–€150 | €40–€150 | €70–€300 | Moderate |
| Timing belt kit, or timing chain job (a chain on a V6 is the top of the range) | €240–€1500 | €60–€3500 | €300–€5000 | Professional |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Codes related to P1351
These codes are often seen alongside P1351 or point to related issues, on any make:
Looking for the full P1351 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P1351 guide