P0310

Code

LAND ROVER P — Powertrain

cylinder 10 ignition failure

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 25 EN: 32 RU: 24

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Page language: EN

Causes

Faulty ignition coil on cylinder 10
Worn, fouled or incorrectly gapped spark plug in cylinder 10
Failing or clogged fuel injector for cylinder 10
Open/shorted wiring or poor connector at coil, injector or PCM circuit
Low compression or mechanical engine damage in cylinder 10 (valves, piston, rings)
Fuel pressure or delivery problem affecting that cylinder

Symptoms

Malfunction Indicator Lamp (MIL/Check Engine) illuminated
Rough idle or vibration worse at idle
Reduced engine power and hesitation under load
Poor fuel economy and increased emissions
Possible audible backfire or popping from intake/exhaust
Stored misfire-related freeze frame data and misfire counters for cylinder 10

What to check

Scan for codes and note freeze frame & misfire counters; check for related codes (cam/crank/amplifier)
Visual inspection of ignition coil, plug, wiring, and connectors for damage or corrosion
Swap coil from cylinder 10 with a known good cylinder and re-test to see if misfire follows coil
Inspect and remove spark plug from cylinder 10 — check condition, gap, fouling
Swap injector with another cylinder or test injector pulse and spray pattern
Measure coil primary and secondary resistance per service data

Signal parameters

Cylinder misfire counter for cylinder 10
Short-term and long-term fuel trim (STFT/LTFT)
Ignition coil primary/secondary voltage and dwell time
Injector pulse width and injector current
Engine RPM and throttle position
Fuel rail pressure

Diagnostic algorithm

Retrieve trouble codes, note freeze frame, and check for related codes (P0300–P0312, cam/crank sensor codes).
Perform a visual inspection of wiring/connectors for cylinder 10 coil and injector; repair any obvious damage.
Remove and inspect spark plug for wear, fouling, or damage; replace if out of spec and verify correct gap.
Swap the ignition coil from cylinder 10 with a coil from another cylinder; clear codes and run engine to see if misfire follows the coil.
If misfire follows the coil, replace the coil. If it stays on cylinder 10, swap the fuel injector and retest to isolate injector vs cylinder issue.
Measure coil primary and secondary resistance and compare to factory spec. Check injector resistance and operation (pulse) with a scope or noid light.
Check fuel pressure and volume to eliminate fuel delivery issues that could affect a single cylinder.
Perform compression or leak-down test on cylinder 10 to assess mechanical health; compare to other cylinders and factory limits.
If electrical faults are suspected, backprobe connector and verify PCM driver signals for coil/injector while cranking and at idle (use scope if available).
Replace failed components (coil, plug, injector, wiring, or ECU as indicated). Clear codes and perform road test. Re-scan to verify code does not return and that misfire counts are normal.

Likely causes

Primary ignition component failure (coil or spark plug) — most common
Fuel injector electrical failure or blockage
Wiring harness connector corrosion or broken wire at coil/injector
Loss of compression (ring wear, burnt valve) in cylinder 10
Intermittent PCM output to coil/injector or sensor signal problem

Fault status

⚠️ Status

P0310 — Cylinder 10 ignition failure detected by PCM. Indicates a misfire event originating in cylinder 10; check ignition, fuel, electrical and mechanical systems for that cylinder.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours

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P0310 — cylinder 10 ignition failure